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REGULATORY CAPITAL (Tables) | 3 Months Ended
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Mar. 31, 2021
REGULATORY CAPITAL |
Schedule of actual and minimum regulatory capital requirements of the subsidiary | The following table presents the Company’s subsidiaries with regulatory capital requirements discussed above, as well as the actual and minimum regulatory capital requirements of the subsidiary as of March 31, 2021 (in millions): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | Minimum | ​
Subsidiary | Regulatory Authority | ​ | Actual | ​ | Requirement | ​
Cboe Trading | FINRA/SEC | ​ | $ | 16.6 | ​ | $ | 0.7 | ​
BIDS Trading | FINRA/SEC | ​ | ​ | 13.7 | ​ | ​ | 0.2 | ​
Cboe Europe | FCA | ​ | ​ | 51.9 | ​ | ​ | 24.3 | ​
Cboe Chi-X Europe | FCA | ​ | ​ | 0.2 | ​ | ​ | 0.1 | ​
Cboe NL | Dutch Ministry of Finance | ​ | ​ | 7.5 | ​ | ​ | 5.3 | ​
EuroCCP | DNB | ​ | ​ | 50.7 | ​ | ​ | 30.2 | ​
MATCHNow | IIROC | ​ | ​ | 2.5 | ​ | ​ | 0.2 | ​

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- Definition Tabular disclosure of entity's required and actual net worth amounts as of the balance sheet date, by secondary market investor. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c)(a) -URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47080-110998 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6490092&loc=d3e47304-110998 + Details
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