<SEC-DOCUMENT>0001209191-14-072155.txt : 20141202
<SEC-HEADER>0001209191-14-072155.hdr.sgml : 20141202
<ACCEPTANCE-DATETIME>20141202122821
ACCESSION NUMBER:		0001209191-14-072155
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20141128
FILED AS OF DATE:		20141202
DATE AS OF CHANGE:		20141202

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EATON VANCE SENIOR FLOATING RATE TRUST
		CENTRAL INDEX KEY:			0001258623
		IRS NUMBER:				000000000

	BUSINESS ADDRESS:	
		STREET 1:		TWO INTERNATIONAL PLACE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
		BUSINESS PHONE:		617-482-8260

	MAIL ADDRESS:	
		STREET 1:		TWO INTERNATIONAL PLACE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EATON VANCE SENIOR FLOATING RATE FUND
		DATE OF NAME CHANGE:	20030806

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			UBS Group AG
		CENTRAL INDEX KEY:			0001610520
		STANDARD INDUSTRIAL CLASSIFICATION:	NATIONAL COMMERCIAL BANKS [6021]
		STATE OF INCORPORATION:			V8
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-21411
		FILM NUMBER:		141259792

	BUSINESS ADDRESS:	
		STREET 1:		BAHNHOFSTRASSE 45
		CITY:			ZURICH
		STATE:			V8
		ZIP:			CH-8001
		BUSINESS PHONE:		41-44-234-1111

	MAIL ADDRESS:	
		STREET 1:		BAHNHOFSTRASSE 45
		CITY:			ZURICH
		STATE:			V8
		ZIP:			CH-8001
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>doc3.xml
<DESCRIPTION>FORM 3 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2014-11-28</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001258623</issuerCik>
        <issuerName>EATON VANCE SENIOR FLOATING RATE TRUST</issuerName>
        <issuerTradingSymbol>EFR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001610520</rptOwnerCik>
            <rptOwnerName>UBS Group AG</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>BAHNHOFSTRASSE 45</rptOwnerStreet1>
            <rptOwnerStreet2>PO BOX CH-8098</rptOwnerStreet2>
            <rptOwnerCity>ZURICH</rptOwnerCity>
            <rptOwnerState>V8</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>SWITZERLAND</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Auction Preferred Stock</value>
                <footnoteId id="F2"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2833</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By subsidiary - see footnote</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This Statement is filed jointly by UBS Group AG for the benefit and on behalf of UBS Securities LLC and UBS Financial Services Inc., two-wholly owned subsidiaries of UBS AG to which UBS AG has delegated portions of its performance obligations with respect to the Auction Rate Securities Rights issued by UBS AG to certain clients and pursuant to which the securities reported herein have been purchased from such clients.</footnote>
        <footnote id="F2">Cusip No 27828Q204, 27828Q303, 27828Q402, 27828Q501</footnote>
        <footnote id="F3">Pursuant to the Global Relief Letter referred to below, this filing reports holdings of the Series of Auction Preferred Stock identified in Item 1 of this Table I on an aggregated basis.</footnote>
    </footnotes>

    <remarks>The Shares reported herein represent UBS Group AG's combined holdings in multiple series of auction preferred securities of the issuer, which are treated herein as one class of securities in accordance with the Auction Rate Securities -- Global Exemptive Relief letter (&quot;Global Relief Letter&quot;) issued by the staff of the Securities and Exchange Commission (SEC) on September 22, 2008.  UBS Group AG undertakes to provide, upon request by the SEC staff, the issuer, or a security holder of the issuer, complete information regarding transaction(s) outlined above, as required by the Global Relief Letter.

The event triggering notification is the acquisition of UBS AG by UBS Group AG through the completion of a share transfer offer on 28 November 2014 in which the shareholders of UBS AG became shareholders of UBS Group AG and their shares in UBS AG were transferred to UBS Group AG. As a result, UBS Group AG controls UBS AG.</remarks>

    <ownerSignature>
        <signatureName>/s/ Anthony DeFilippis</signatureName>
        <signatureDate>2014-12-02</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/ William Chandler</signatureName>
        <signatureDate>2014-12-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
