<SEC-DOCUMENT>0001381197-25-000086.txt : 20250730
<SEC-HEADER>0001381197-25-000086.hdr.sgml : 20250730
<ACCEPTANCE-DATETIME>20250730163724
ACCESSION NUMBER:		0001381197-25-000086
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20250730
ITEM INFORMATION:		Other Events
FILED AS OF DATE:		20250730
DATE AS OF CHANGE:		20250730

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Interactive Brokers Group, Inc.
		CENTRAL INDEX KEY:			0001381197
		STANDARD INDUSTRIAL CLASSIFICATION:	SECURITY BROKERS, DEALERS & FLOTATION COMPANIES [6211]
		ORGANIZATION NAME:           	09 Crypto Assets
		EIN:				300390693
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33440
		FILM NUMBER:		251167692

	BUSINESS ADDRESS:	
		STREET 1:		ONE PICKWICK PLAZA
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
		BUSINESS PHONE:		203-618-5800

	MAIL ADDRESS:	
		STREET 1:		ONE PICKWICK PLAZA
		CITY:			GREENWICH
		STATE:			CT
		ZIP:			06830
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>ibkr-20250730x8k.htm
<DESCRIPTION>8-K
<TEXT>
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font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Date of Report (Date of Earliest Event Reported):  </span><ix:nonNumeric name="dei:DocumentPeriodEndDate" id="ct-nonNumeric-2be6e02e-7f03-47da-9363-39c880c50599" contextRef="Duration_7_30_2025_To_7_30_2025" format="ixt:datemonthdayyearen"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">July 30, 2025</span></ix:nonNumeric></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 16pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><ix:nonNumeric name="dei:EntityRegistrantName" id="ct-nonNumeric-e68893fa-711d-4e95-a9ef-bd1cca28399e" contextRef="Duration_7_30_2025_To_7_30_2025"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 16pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">INTERACTIVE BROKERS GROUP, INC.</span></ix:nonNumeric></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 12pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">(Exact Name of Registrant as Specified in its Charter)</span></p><div style="text-align:center"><table dir="ltr" style="border: none;border-collapse: collapse;margin-bottom: .001pt;margin-left: auto;margin-right: auto;width: 100%;"><tr style="height: 0.01in;"><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 31.7%;"><p dir="ltr" style="text-align:left; font-family: Calibri;font-size: 11pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 32.2%;"><p dir="ltr" style="text-align:left; font-family: Calibri;font-size: 10pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 36.0%;"><p dir="ltr" style="text-align:left; font-family: Calibri;font-size: 10pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 31.7%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><ix:nonNumeric name="dei:EntityIncorporationStateCountryCode" id="ct-nonNumeric-b6b2002f-b311-4120-ac69-a2ad59e457da" contextRef="Duration_7_30_2025_To_7_30_2025" format="ixt-sec:stateprovnameen"><span style="white-space:pre-wrap; 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font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">30-0390693</span></ix:nonNumeric></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 31.7%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">(State or Other Jurisdiction</span><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"><br/>&#8206;</span><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">of Incorporation)</span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 32.2%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">(Commission File Number)</span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 36.0%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">(I.R.S. Employer Identification</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> Number)</span></p></td></tr></table></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 9pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-size: 9pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><ix:nonNumeric name="dei:EntityAddressAddressLine1" id="ct-nonNumeric-84d9ad2e-1aec-4c20-85ee-e27a8199b859" contextRef="Duration_7_30_2025_To_7_30_2025"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">One Pickwick Plaza</span></ix:nonNumeric><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">, </span><ix:nonNumeric name="dei:EntityAddressCityOrTown" id="ct-nonNumeric-8314e4f2-ce66-4580-8672-8b19fee21925" contextRef="Duration_7_30_2025_To_7_30_2025"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Greenwich</span></ix:nonNumeric><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">, </span><ix:nonNumeric name="dei:EntityAddressStateOrProvince" id="ct-nonNumeric-d74a3d0a-888a-4566-af35-e584dbb1fe4c" contextRef="Duration_7_30_2025_To_7_30_2025"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">CT</span></ix:nonNumeric><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;"> </span><ix:nonNumeric name="dei:EntityAddressPostalZipCode" id="ct-nonNumeric-7a1512b9-63c5-42f5-91f0-54c044cb6c82" contextRef="Duration_7_30_2025_To_7_30_2025"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">06830</span></ix:nonNumeric></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 6pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">(Address of Principal Executive Offices) (Zip Code)</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">(</span><ix:nonNumeric name="dei:CityAreaCode" id="ct-nonNumeric-c726899d-b525-4237-b73e-0ce36a7bbe8c" contextRef="Duration_7_30_2025_To_7_30_2025"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">203</span></ix:nonNumeric><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">) </span><ix:nonNumeric name="dei:LocalPhoneNumber" id="ct-nonNumeric-3c9e1e2b-456c-4a93-9f0a-7e0df84cb661" contextRef="Duration_7_30_2025_To_7_30_2025"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">618-5800</span></ix:nonNumeric></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 12pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">(Registrant&#8217;s Telephone Number, Including Area Code)</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Not Applicable</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 12pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">(Former Name or Former Address, if Changed Since Last Report)</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 12pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</span></p><div style="text-align:left"><table dir="ltr" style="border: none;border-collapse: collapse;margin-bottom: .001pt;margin-left: 0;margin-right: auto;"><tr style="height: 0.01in;"><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 29.4pt;"><p dir="ltr" style="text-align:left; font-family: Calibri;font-size: 11pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 456pt;"><p dir="ltr" style="text-align:left; font-family: Calibri;font-size: 10pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 29.4pt;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 105.0%;margin-bottom: 6pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><ix:nonNumeric name="dei:WrittenCommunications" id="ct-nonNumeric-1d24e9a5-6449-423a-8518-b24ea5639759" contextRef="Duration_7_30_2025_To_7_30_2025" format="ixt:booleanfalse"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#9633;</span></ix:nonNumeric></p></td><td colspan="2" style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 479.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 105.0%;margin-bottom: 6pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 29.4pt;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 105.0%;margin-bottom: 6pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><ix:nonNumeric name="dei:SolicitingMaterial" id="ct-nonNumeric-af26a1a0-df0a-4991-8488-a89d5916ed97" contextRef="Duration_7_30_2025_To_7_30_2025" format="ixt:booleanfalse"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#9633;</span></ix:nonNumeric></p></td><td colspan="2" style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 479.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 105.0%;margin-bottom: 6pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 29.4pt;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 105.0%;margin-bottom: 6pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><ix:nonNumeric name="dei:PreCommencementTenderOffer" id="ct-nonNumeric-c958d06b-448e-49a3-83ed-942223d98dd4" contextRef="Duration_7_30_2025_To_7_30_2025" format="ixt:booleanfalse"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#9633;</span></ix:nonNumeric></p></td><td colspan="2" style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 479.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 105.0%;margin-bottom: 6pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 29.4pt;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 105.0%;margin-bottom: 6pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><ix:nonNumeric name="dei:PreCommencementIssuerTenderOffer" id="ct-nonNumeric-2a15fc2f-a2ad-4eee-b1ff-309bd47c7bf1" contextRef="Duration_7_30_2025_To_7_30_2025" format="ixt:booleanfalse"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#9633;</span></ix:nonNumeric></p></td><td colspan="2" style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 479.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 105.0%;margin-bottom: 6pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</span></p></td></tr></table></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><div style="text-align:center"><table dir="ltr" style="border: none;border-collapse: collapse;margin-bottom: .001pt;margin-left: auto;margin-right: auto;width: 100%;"><tr style="height: 0.01in;"><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 39.2%;"><p dir="ltr" style="text-align:left; font-family: Calibri;font-size: 1pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 26.7%;"><p dir="ltr" style="text-align:left; font-family: Calibri;font-size: 1pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 34.2%;"><p dir="ltr" style="text-align:left; font-family: Calibri;font-size: 1pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 39.2%;"><div style="border-bottom: solid windowtext 1.0pt;border-left: none;border-right: none;border-top: none;padding-bottom: 0;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 9pt;line-height: 107.9%;margin-bottom: 1pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 9pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Title of each class</span></p></div></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 26.7%;"><div style="border-bottom: solid windowtext 1.0pt;border-left: none;border-right: none;border-top: none;padding-bottom: 0;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 9pt;line-height: 107.9%;margin-bottom: 1pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 9pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Trading Symbol</span></p></div></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 34.2%;"><div style="border-bottom: solid windowtext 1.0pt;border-left: none;border-right: none;border-top: none;padding-bottom: 0;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 9pt;line-height: 107.9%;margin-bottom: 1pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 9pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Name of the exchange on which registered</span></p></div></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 39.2%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 9pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0.14in;margin-right: 0;margin-top: 0;text-align: center;text-indent: -0.14in;"><ix:nonNumeric name="dei:Security12bTitle" id="ct-nonNumeric-3e1d27d9-92bb-4991-8617-fa8494096015" contextRef="Duration_7_30_2025_To_7_30_2025"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 9pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Common Stock, par value $.01 per share</span></ix:nonNumeric></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 26.7%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 9pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 9pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;&#160;</span><ix:nonNumeric name="dei:TradingSymbol" id="ct-nonNumeric-1d3a48b5-3600-4981-899f-abbbbdc70cc5" contextRef="Duration_7_30_2025_To_7_30_2025"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 9pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">IBKR</span></ix:nonNumeric><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 9pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;&#160;</span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 34.2%;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 9pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 9pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;&#160;The </span><ix:nonNumeric name="dei:SecurityExchangeName" id="ct-nonNumeric-b236af77-6e6b-4547-8af6-8184f524de2f" contextRef="Duration_7_30_2025_To_7_30_2025" format="ixt-sec:exchnameen"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 9pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Nasdaq</span></ix:nonNumeric><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 9pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> Global Select Market</span></p></td></tr></table></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; color: #000000;font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (&#167;240.12b-2 of this chapter).</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Emerging growth company </span><ix:nonNumeric name="dei:EntityEmergingGrowthCompany" id="ct-nonNumeric-0d016eda-f482-48c5-8998-0b57cfc939c0" contextRef="Duration_7_30_2025_To_7_30_2025" format="ixt:booleanfalse"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#9633;</span></ix:nonNumeric></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.    </span><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#9633;</span></p><p dir="ltr" style="font-family: Calibri;font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><div style="border-bottom: none;border-left: none;border-right: none;border-top: double windowtext 2.5pt;padding-top: 0;"><p dir="ltr" style="font-family: Calibri;font-size: 11pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></div></div>
    <div><div class="footerContainer"></div><hr class="pageBreak" style="margin:18pt 0pt; ct-page-break: true; page-break-after: always;"/><div class="headerContainer"></div></div>
    <div><p dir="ltr" style="font-family: Calibri;font-size: 11pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Item 8.01. Other Events</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: justify;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">On July 30, 2025, Interactive Brokers Group, Inc. (the &#8220;Company&#8221;) filed a Prospectus Supplement under Rule 424(b)(5) to take down 3,836,000 shares of the Company&#8217;s common stock off its shelf Registration Statement on Form S-3 (Registration Statement No. 333-273451) (the &#8220;Registration Statement&#8221;) filed with the SEC on July 26, 2023. The legal opinion letter of Dechert LLP, counsel to the Company, regarding the validity of the shares is filed as Exhibit 5.5 to this Current Report on Form 8-K. The legal opinion letter is also hereby incorporated by reference into the Registration Statement, as Exhibit 5.5 thereto.</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 6pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Item. 9.01 Financial Statements and Exhibits.</span></p><div style="text-align:center"><table dir="ltr" style="border: none;border-collapse: collapse;margin-bottom: .001pt;margin-left: auto;margin-right: auto;width: 100%;"><tr style="height: 0.01in;"><td style="background: #FFFFFF;border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: middle;width: 57pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="background: #FFFFFF;border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 11.1pt;"><p dir="ltr" style="text-align:left; font-family: Calibri;font-size: 10pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="background: #FFFFFF;border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: middle;width: 471.9pt;"><p dir="ltr" style="text-align:left; font-family: Calibri;font-size: 10pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 10pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="background: #FFFFFF;border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 57pt;"><div style="border-bottom: solid #000000 1.0pt;border-left: none;border-right: none;border-top: none;padding-bottom: 0;"><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Exhibit&#160;No.</span></p></div></td><td style="background: #FFFFFF;border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 11.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">&#160;&#160;</span></p></td><td style="background: #FFFFFF;border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 471.9pt;"><div style="border-bottom: solid #000000 1.0pt;border-left: none;border-right: none;border-top: none;padding-bottom: 0;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: bold;margin: 0;padding: 0;">Description</span></p></div></td></tr><tr style="height: 0.26in;"><td style="background: #FFFFFF;border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 57pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">5.5</span></p></td><td style="background: #FFFFFF;border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 11.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="background: #FFFFFF;border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 471.9pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><a href="ibkr-20250730xex5_5.htm"><span style="white-space:pre-wrap; color: #0563C1;font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;text-decoration: underline;">Opinion of Dechert</span></a></p></td></tr><tr><td style="background: #FFFFFF;border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 57pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">104</span></p></td><td style="background: #FFFFFF;border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: bottom;width: 11.1pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="background: #FFFFFF;border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 471.9pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Cover Page Interactive Data File </span><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">(the cover page XBRL tags are embedded within the Inline XBRL Document).</span></p></td></tr></table></div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">***</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"><br/>&#8206;</span></p></div>
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    <div><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 12pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 12pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">SIGNATURE</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;text-indent: 0.50in;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 12pt;margin-left: 0;margin-right: 0;margin-top: 0;text-indent: 0.50in;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 108%;margin-bottom: 12pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Dated: July 30, 2025</span></p><div style="text-align:left"><table dir="ltr" style="border: none;border-collapse: collapse;margin-bottom: .001pt;margin-left: 0;margin-right: auto;"><tr style="height: 0.01in;"><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 159.6pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 1pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 1pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 49.8pt;"><p dir="ltr" style="text-align:left; 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font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td colspan="2" style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 301.8pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">INTERACTIVE BROKERS GROUP, INC.</span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 159.6pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 49.8pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 252pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 159.6pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 49.8pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 252pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 159.6pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 49.8pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">By:</span></p></td><td style="border-bottom: solid windowtext 1.0pt;border-left-style: none;border-right-style: none;border-top-style: none;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 252pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">/s/ Paul J. Brody</span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 159.6pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 49.8pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Name:</span></p></td><td style="border-bottom-style: none;border-left-style: none;border-right-style: none;border-top: solid windowtext 1.0pt;padding-bottom: 0;padding-left: 0;padding-right: 0;padding-top: 0;vertical-align: top;width: 252pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Paul J. Brody</span></p></td></tr><tr><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 159.6pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 49.8pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Title:</span></p></td><td style="border-bottom: none;border-left: none;border-right: none;border-top: none;padding-bottom: 0;padding-top: 0;vertical-align: top;width: 252pt;"><p dir="ltr" style="text-align:left; font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 0;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">Chief Financial Officer, Treasurer</span><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"><br/>&#8206;</span><span style="white-space:pre-wrap; font-family: 'Times New Roman', 'serif';font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;">and Secretary</span></p></td></tr></table></div><p dir="ltr" style="font-family: Calibri;font-size: 11pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: Calibri;font-size: 11pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: Calibri;font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: Calibri;font-size: 11pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;"><span style="white-space:pre-wrap; font-family: Calibri;font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p><p dir="ltr" style="font-family: 'Times New Roman', 'serif';font-size: 11pt;line-height: 107.9%;margin-bottom: 8pt;margin-left: 0;margin-right: 0;margin-top: 0;text-align: center;"><span style="white-space:pre-wrap; font-size: 11pt;font-style: normal;font-weight: normal;margin: 0;padding: 0;"> </span></p></div>
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			20250730 Exhibit 5.5
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			<font style="display: inline;font-family:Times New Roman;font-weight:bold;font-size:10pt;">EXHIBIT&nbsp;</font><font style="display: inline;font-family:Times New Roman;font-weight:bold;font-size:10pt;">5</font><font style="display: inline;font-family:Times New Roman;font-weight:bold;font-size:10pt;">.</font><font style="display: inline;font-family:Times New Roman;font-weight:bold;font-size:10pt;">5</font>
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			<font style="display: inline;font-family:Times New Roman;color:#000000;">&#xFEFF;</font>
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			<font style="display: inline;font-family:Times New Roman;color:#000000;">July 30, 2025</font>
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			<font style="display: inline;font-family:Times New Roman;color:#000000;">Interactive&nbsp;Brokers Group, Inc.</font><br /><font style="display: inline;font-family:Calibri;color:#000000;"></font><font style="display: inline;font-family:Times New Roman;color:#000000;">One Pickwick Plaza</font><br /><font style="display: inline;font-family:Calibri;color:#000000;"></font><font style="display: inline;font-family:Times New Roman;color:#000000;">Greenwich, Connecticut 06830</font>
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			<font style="display: inline;font-family:Times New Roman;color:#000000;">Re:&nbsp;&nbsp;Form S-3 Registration Statement and Prospectus Supplement</font>
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			<font style="display: inline;font-family:Times New Roman;color:#000000;">Ladies and Gentlemen:&nbsp;</font>
		</p>
		<p style="margin:0pt 0pt 12pt;line-height:100%;text-align:justify;text-justify:inter-ideograph;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;color:#000000;">We have acted as counsel to&nbsp;Interactive Brokers Group, Inc., a Delaware corporation (the &#x201C;Company&#x201D;),&nbsp;in connection with the preparation and filing of (1) a Registration Statement on Form S-3 (as may be amended from time to time, the &#x201C;Registration Statement&#x201D;) filed on July 26, 2023 by the Company as an automatic shelf registration statement with the Securities and Exchange Commission (the &#x201C;Commission&#x201D;) under the Securities Act of 1933, as amended (the &#x201C;Act&#x201D;); and (2)&nbsp;the Company&#x2019;s prospectus supplement relating to the issuance and sale by the Company of up to 3,836,000 shares (the &#x201C;Offered Shares&#x201D;)&nbsp;of Class A common stock, par value $0.01 per share, of the Company (the &#x201C;Common Shares&#x201D;),&nbsp;to be filed by the Company with the Commission on or about the date of this opinion pursuant to Rule 424(b)(5) under the Act (together with the Company&#x2019;s base prospectus included in the Registration Statement, collectively, the &#x201C;Prospectus&#x201D;).&nbsp;&nbsp;The Registration Statement relates to the issuance and sale from time to time on a delayed or continuous basis, pursuant to Rule 415 of the General Rules and Regulations promulgated under the Act, of an indeterminate number of&nbsp;Common Shares. &nbsp;The Offered Shares are to be issued and sold to IBG Holdings LLC for distribution to, and/or sale for the benefit of, certain of its members in exchange for membership interests in IBG LLC equal in number to such number of Common Shares issued by the Company.</font>
		</p>
		<p style="margin:0pt 0pt 11pt;line-height:100%;text-align:justify;text-justify:inter-ideograph;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;color:#000000;">This opinion is being delivered in accordance with the requirements of Item 601(b)(5) of Regulation S-K under the Act, and no opinion is expressed herein as to any matter pertaining to the contents of the Registration Statement or the Prospectus, other than as to the validity of the Offered Shares as set forth below.</font>
		</p>
		<p style="margin:0pt 0pt 12pt;line-height:100%;text-align:justify;text-justify:inter-ideograph;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;color:#000000;">We have reviewed such records, documents, agreements and certificates, and examined such matters of fact and law, as we have considered necessary or appropriate to express the opinions set forth below.&nbsp;&nbsp;In making our examination of records, documents, agreements and certificates, we have assumed the authenticity of the same, the correctness of the information contained therein, the genuineness of all signatures, the authority of all persons entering and maintaining records or executing documents, agreements and certificates, and the conformity to authentic originals of all items submitted to us as copies (whether certified, conformed, photostatic or by other electronic means) of records, documents, agreements or certificates.&nbsp;&nbsp;In rendering the opinions set forth below, we have relied as to factual matters upon certificates of public officials, certificates&nbsp;and other assurances of officers and representations of the Company.</font>
		</p>
		<p style="margin:0pt 0pt 10pt;line-height:100%;text-align:justify;text-justify:inter-ideograph;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;color:#000000;">We have further assumed that the Offered Shares will be issued and sold in the manner stated in the Registration Statement and the Prospectus and in compliance with the applicable provisions of the Act and the rules and regulations of the Commission thereunder, and the securities or blue sky laws of various states.</font>
		</p>
		<p style="margin:0pt 0pt 12pt;line-height:100%;text-align:justify;text-justify:inter-ideograph;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;color:#000000;">Based upon and subject to the foregoing and to the other assumptions, qualifications, limitations and exceptions set forth herein, we are of the opinion that the Offered Shares have been duly authorized for issuance by the Company and, when issued and delivered against receipt by the Company of payment of the agreed-upon consideration therefor as provided in the Prospectus, will be validly issued, fully paid and nonassessable.&nbsp;</font>
		</p>
		<p style="margin:0pt 0pt 12pt;line-height:100%;text-align:justify;text-justify:inter-ideograph;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;color:#000000;">The opinions expressed herein are limited to the Delaware General Corporation Law, and we express no opinion herein concerning any other laws, rules or regulations (including, without limitation, the application of the securities or &#x201C;blue sky&#x201D; laws of any state to the offer and/or sale of the Offered Shares).&nbsp;</font>
		</p>
		<p style="margin:0pt 0pt 12pt;line-height:100%;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;color:#000000;">&#xFEFF;</font>
		</p>
		<p style="margin:0pt 0pt 12pt;line-height:100%;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;color:#000000;">&#xFEFF;</font>
		</p>
		<p style="margin:0pt 0pt 12pt;line-height:100%;font-family:Calibri;font-size: 11pt">

		</p>
		<p><font size="1"> </font></p><hr size="3" style="color:#999999" width="100%" align="center"></hr><p style="page-break-after:always">&nbsp;</p>
		<p style="margin:0pt 0pt 12pt;line-height:100%;font-family:Calibri;;font-size: 11pt"><font style="display: inline;font-family:Times New Roman;color:#000000;">&#xFEFF;</font>
		</p>
		<p style="margin:0pt 0pt 12pt;line-height:100%;text-align:justify;text-justify:inter-ideograph;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;color:#000000;">We hereby consent to the filing of this opinion with the Commission as an exhibit to a Current Report on Form 8-K of the Company.&nbsp;&nbsp;In giving this consent, we do not thereby admit that we are within the category of persons whose consent is required under Section 7 of the Act or the rules and regulations of the Commission promulgated thereunder.&nbsp;&nbsp;This opinion is expressed as of the date hereof, and we disclaim any undertaking to advise you of any subsequent changes in the facts stated or assumed herein or of any subsequent changes in applicable laws, even where the Common Shares may be issued from time to time on a delayed or continuous basis.</font>
		</p>
		<p style="margin:0pt 0pt 12pt;line-height:100%;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;color:#000000;">Sincerely,</font>
		</p>
		<p style="margin:0pt 0pt 12pt;line-height:100%;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;color:#000000;">/s/ Dechert LLP</font>
		</p>
		<p style="margin:0pt 0pt 12pt;line-height:100%;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;color:#000000;">Dechert LLP</font>
		</p>
		<p style="margin:0pt 0pt 10pt;font-family:Calibri;line-height:115%;font-size: 12pt">
			<font style="display: inline;font-family:Times New Roman;font-size:12pt;">&#xFEFF;</font>
		</p>
		<p style="margin:0pt 0pt 12pt;line-height:normal;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;font-family:Times New Roman;">&#xFEFF;</font>
		</p>
		<p style="margin:0pt;background-color: #FFFFFF;line-height:100%;text-align:right;font-family:Calibri;font-size: 11pt">
			<font style="display: inline;">&#xFEFF;</font>
		</p>
		<p><font size="1"> </font></p><hr size="3" style="color:#999999" width="100%" align="center"></hr>
	</div></body>
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<SEQUENCE>3
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<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.25.2</span><table class="report" border="0" cellspacing="2" id="id2">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Document And Entity Information<br></strong></div></th>
<th class="th"><div>Jul. 30, 2025</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_CoverAbstract', window );"><strong>Document And Entity Information [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_DocumentType', window );">Document Type</a></td>
<td class="text">8-K<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_DocumentPeriodEndDate', window );">Document Period End Date</a></td>
<td class="text">Jul. 30,  2025<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityRegistrantName', window );">Entity Registrant Name</a></td>
<td class="text">INTERACTIVE BROKERS GROUP, INC.<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityIncorporationStateCountryCode', window );">Entity Incorporation, State or Country Code</a></td>
<td class="text">DE<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityFileNumber', window );">Entity File Number</a></td>
<td class="text">001-33440<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityTaxIdentificationNumber', window );">Entity Tax Identification Number</a></td>
<td class="text">30-0390693<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressAddressLine1', window );">Entity Address, Address Line One</a></td>
<td class="text">One Pickwick Plaza<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressCityOrTown', window );">Entity Address, City or Town</a></td>
<td class="text">Greenwich<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressStateOrProvince', window );">Entity Address, State or Province</a></td>
<td class="text">CT<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressPostalZipCode', window );">Entity Address, Postal Zip Code</a></td>
<td class="text">06830<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_CityAreaCode', window );">City Area Code</a></td>
<td class="text">203<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_LocalPhoneNumber', window );">Local Phone Number</a></td>
<td class="text">618-5800<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_WrittenCommunications', window );">Written Communications</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_SolicitingMaterial', window );">Soliciting Material</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_PreCommencementTenderOffer', window );">Pre Commencement Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_PreCommencementIssuerTenderOffer', window );">Pre Commencement Issuer Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_Security12bTitle', window );">Title of 12(b) Security</a></td>
<td class="text">Common Stock, par value $.01 per share<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_TradingSymbol', window );">Trading Symbol</a></td>
<td class="text">IBKR<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_SecurityExchangeName', window );">Security Exchange Name</a></td>
<td class="text">NASDAQ<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityCentralIndexKey', window );">Entity Central Index Key</a></td>
<td class="text">0001381197<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityEmergingGrowthCompany', window );">Entity Emerging Growth Company</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_AmendmentFlag', window );">Amendment Flag</a></td>
<td class="text">false<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AmendmentFlag">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AmendmentFlag</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CityAreaCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Area code of city</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CityAreaCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CoverAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Cover page.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CoverAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentPeriodEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentPeriodEndDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentType">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentType</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:submissionTypeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressAddressLine1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Address Line 1 such as Attn, Building Name, Street Name</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressAddressLine1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressCityOrTown">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Name of the City or Town</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressCityOrTown</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressPostalZipCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Code for the postal or zip code</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressPostalZipCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressStateOrProvince">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Name of the state or province.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressStateOrProvince</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:stateOrProvinceItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCentralIndexKey">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCentralIndexKey</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:centralIndexKeyItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityEmergingGrowthCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Indicate if registrant meets the emerging growth company criteria.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityEmergingGrowthCompany</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFileNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFileNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:fileNumberItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityIncorporationStateCountryCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Two-character EDGAR code representing the state or country of incorporation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityIncorporationStateCountryCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarStateCountryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Local phone number for entity.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 13e<br> -Subsection 4c<br></p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 14d<br> -Subsection 2b<br></p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Title of a 12(b) registered security.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b<br></p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Name of the Exchange on which a security is registered.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection d1-1<br></p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 14a<br> -Subsection 12<br></p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Trading symbol of an instrument as listed on an exchange.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Securities Act<br> -Number 230<br> -Section 425<br></p></div>
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