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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 1xhROQ72gQSBmxm0LVnCRw==

<SEC-DOCUMENT>0001140361-10-013598.txt : 20100325
<SEC-HEADER>0001140361-10-013598.hdr.sgml : 20100325
<ACCEPTANCE-DATETIME>20100325104725
ACCESSION NUMBER:		0001140361-10-013598
CONFORMED SUBMISSION TYPE:	D/A
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
ITEM INFORMATION:		Section 3(c)(7)
FILED AS OF DATE:		20100325
DATE AS OF CHANGE:		20100325
EFFECTIVENESS DATE:		20100325

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ERGOS FUND LP
		CENTRAL INDEX KEY:			0001425359
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		D/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-114051
		FILM NUMBER:		10703657

	BUSINESS ADDRESS:	
		STREET 1:		4223 GLENCOE AVE
		STREET 2:		SUITE C207
		CITY:			MARINA DEL REY
		STATE:			CA
		ZIP:			90292
		BUSINESS PHONE:		310-574-8610

	MAIL ADDRESS:	
		STREET 1:		4223 GLENCOE AVE
		STREET 2:		SUITE C207
		CITY:			MARINA DEL REY
		STATE:			CA
		ZIP:			90292
</SEC-HEADER>
<DOCUMENT>
<TYPE>D/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0603</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001425359</cik>
        <entityName>ERGOS FUND LP</entityName>
        <issuerAddress>
            <street1>4223 GLENCOE AVE</street1>
            <street2>SUITE C207</street2>
            <city>MARINA DEL REY</city>
            <stateOrCountry>CA</stateOrCountry>
            <zipCode>90292</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>310-574-8610</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Limited Partnership</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2007</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Rishi</firstName>
                <middleName>K.</middleName>
                <lastName>Narang</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>4223 Glencoe Avenue</street1>
                <street2>Suite C207</street2>
                <city>Marina Del Rey</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>90292</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Promoter</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of Ergos Capital, LLC (the General Partner)</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>NA</firstName>
                <lastName>Lombard Street Partners</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>931 Hartz Way</street1>
                <street2>Suite 220</street2>
                <city>Danville</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94526</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Member of Ergos Capital, LLC (the General Partner)</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Christopher</firstName>
                <middleName>D.</middleName>
                <lastName>Barlow</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>931 Hartz Way</street1>
                <street2>Suite 220</street2>
                <city>Danville</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94526</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Sole Member of Lombard Street Partners (Member of the General Partner)</relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Eric</firstName>
                <lastName>Cressman</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>4223 Glencoe Avenue</street1>
                <street2>Suite 207C</street2>
                <city>Marina Del Rey</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>90292</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification>Officer of the General Partner</relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Pooled Investment Fund</industryGroupType>
            <investmentFundInfo>
                <investmentFundType>Hedge Fund</investmentFundType>
                <is40Act>false</is40Act>
            </investmentFundInfo>
        </industryGroup>
        <issuerSize>
            <aggregateNetAssetValueRange>Decline to Disclose</aggregateNetAssetValueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
            <item>3C.7</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001425359-09-000002</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2008-01-01</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>true</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
            <isPooledInvestmentFundType>true</isPooledInvestmentFundType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList>
            <recipient>
                <recipientName>NA</recipientName>
                <recipientCRDNumber>None</recipientCRDNumber>
                <associatedBDName>None</associatedBDName>
                <associatedBDCRDNumber>None</associatedBDCRDNumber>
                <recipientAddress>
                    <street1>NA</street1>
                    <street2>NA</street2>
                    <city>NA</city>
                    <stateOrCountry>XX</stateOrCountry>
                    <zipCode>NA</zipCode>
                </recipientAddress>
                <statesOfSolicitationList></statesOfSolicitationList>
            </recipient>
        </salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>1000000000</totalOfferingAmount>
            <totalAmountSold>60447000</totalAmountSold>
            <totalRemaining>939553000</totalRemaining>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>32</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse>The Investment Manager receives fees calculated as a percentage of net assets and annual profits.</clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>ERGOS FUND LP</issuerName>
                <signatureName>/s/ Rishi K. Narang</signatureName>
                <nameOfSigner>Rishi K. Narang</nameOfSigner>
                <signatureTitle>Managing Member</signatureTitle>
                <signatureDate>2010-03-25</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----