-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 rw1qeqzFOk3vpl0JJfLaSg==

<SEC-DOCUMENT>0001423624-10-000002.txt : 20100412
<SEC-HEADER>0001423624-10-000002.hdr.sgml : 20100412
<ACCEPTANCE-DATETIME>20100412122900
ACCESSION NUMBER:		0001423624-10-000002
CONFORMED SUBMISSION TYPE:	D
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20100412
DATE AS OF CHANGE:		20100412
EFFECTIVENESS DATE:		20100412

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MD INVESTMENT LLC
		CENTRAL INDEX KEY:			0001423625
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-140391
		FILM NUMBER:		10744375

	BUSINESS ADDRESS:	
		STREET 1:		1600 TYSONS BOULEVARD
		STREET 2:		SUITE 300
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22102
		BUSINESS PHONE:		571-382-0020

	MAIL ADDRESS:	
		STREET 1:		1600 TYSONS BOULEVARD
		STREET 2:		SUITE 300
		CITY:			MCLEAN
		STATE:			VA
		ZIP:			22102
</SEC-HEADER>
<DOCUMENT>
<TYPE>D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0704</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001423625</cik>
        <entityName>MD INVESTMENT LLC</entityName>
        <issuerAddress>
            <street1>1600 TYSONS BOULEVARD</street1>
            <street2>SUITE 300</street2>
            <city>MCLEAN</city>
            <stateOrCountry>VA</stateOrCountry>
            <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
            <zipCode>22102</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>571-382-0020</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <edgarPreviousNameList>
            <value>None</value>
        </edgarPreviousNameList>
        <entityType>Limited Liability Company</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2007</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>MARK</firstName>
                <middleName>L.</middleName>
                <lastName>VORSATZ</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>100 FIRST STREET</street1>
                <street2>SUITE 1600</street2>
                <city>SAN FRANCISCO</city>
                <stateOrCountry>CA</stateOrCountry>
                <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                <zipCode>95105</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>ARMAND</firstName>
                <lastName>EPSTEIN</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>125 HIGH STREET</street1>
                <street2>16TH FLOOR</street2>
                <city>BOSTON</city>
                <stateOrCountry>MA</stateOrCountry>
                <stateOrCountryDescription>MASSACHUSETTS</stateOrCountryDescription>
                <zipCode>02110</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>JOSEPH</firstName>
                <middleName>P.</middleName>
                <lastName>KARCZEWSKI</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>71 SOUTH WACKER DRIVE</street1>
                <street2>SUITE 2700</street2>
                <city>CHICAGO</city>
                <stateOrCountry>IL</stateOrCountry>
                <stateOrCountryDescription>ILLINOIS</stateOrCountryDescription>
                <zipCode>60606</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>J.</firstName>
                <middleName>MARTIN</middleName>
                <lastName>O'MALLEY</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1950 UNIVERSITY AVENUE</street1>
                <street2>SUITE 350</street2>
                <city>E. PALO ALTO</city>
                <stateOrCountry>CA</stateOrCountry>
                <stateOrCountryDescription>CALIFORNIA</stateOrCountryDescription>
                <zipCode>94303</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>G.</firstName>
                <middleName>RANDOLPH</middleName>
                <lastName>MACPHERSON</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>777 SOUTH FLAGLER DRIVE</street1>
                <street2>WEST TOWER, SUITE # 1700-W</street2>
                <city>WEST PALM BEACH</city>
                <stateOrCountry>FL</stateOrCountry>
                <stateOrCountryDescription>FLORIDA</stateOrCountryDescription>
                <zipCode>33401</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>DANIEL</firstName>
                <lastName>DEPAOLI</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>452 FIFTH AVENUE</street1>
                <street2>23RD FL</street2>
                <city>NEW YORK</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10018</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>STEPHEN</firstName>
                <middleName>R.</middleName>
                <lastName>CORRICK</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1600 TYSONS BOULEVARD</street1>
                <street2>SUITE 300</street2>
                <city>MCLEAN</city>
                <stateOrCountry>VA</stateOrCountry>
                <stateOrCountryDescription>VIRGINIA</stateOrCountryDescription>
                <zipCode>22101</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Business Services</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Decline to Disclose</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>false</isAmendment>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2010-04-01</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>690795</totalOfferingAmount>
            <totalAmountSold>690795</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>38</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
                <isEstimate>true</isEstimate>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>MD INVESTMENT LLC</issuerName>
                <signatureName>/s/ Stephen R. Corrick</signatureName>
                <nameOfSigner>Stephen R. Corrick</nameOfSigner>
                <signatureTitle>Chief Operating Officer</signatureTitle>
                <signatureDate>2010-04-12</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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