<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-01-14</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001209028</issuerCik>
        <issuerName>FRIEDMAN BILLINGS RAMSEY GROUP INC</issuerName>
        <issuerTradingSymbol>FBR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001228958</rptOwnerCik>
            <rptOwnerName>PASSPORT MANAGEMENT LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PASSPORT MANAGEMENT, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>30 HOTALING PLACE, STE. 300</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001352427</rptOwnerCik>
            <rptOwnerName>Passport Global Master Fund SPC Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PASSPORT MANAGEMENT, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>30 HOTALING PLACE, STE. 300</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001375699</rptOwnerCik>
            <rptOwnerName>Partners Group Alternative Strategies PCC Ltd Gold Iota Cell</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PASSPORT MANAGEMENT, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>30 HOTALING PLACE, STE. 300</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001352428</rptOwnerCik>
            <rptOwnerName>Passport Capital, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PASSPORT MANAGEMENT, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>30 HOTALING PLACE, STE. 300</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001352425</rptOwnerCik>
            <rptOwnerName>Burbank John Howard III</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O PASSPORT MANAGEMENT, LLC</rptOwnerStreet1>
            <rptOwnerStreet2>30 HOTALING PLACE, STE. 300</rptOwnerStreet2>
            <rptOwnerCity>SAN FRANCISCO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94111</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Short Put Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>5</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-01-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>X</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>10</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.01</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2008-01-14</value>
            </exerciseDate>
            <expirationDate>
                <value>2008-01-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2671</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The securities beneficially owned following the reported transactions are held for the account of Passport Global Master Fund SPC Ltd for and on behalf of portfolio A - global strategy (16,681,441 common shares and short put options for 267,100 common shares) a British Virgin Islands segregated portfolio company and Partners Group Alternative Strategies PCC Limited Gold Iota Cell (730,400 shares) a Guernsey protected cell company (&quot;Fund I&quot; and &quot;Fund II&quot; respectively, and together the &quot;Funds&quot;).</footnote>
        <footnote id="F2">Passport Management, LLC, a Delaware limited liability company (&quot;Passport Management&quot;) is the investment manager to the Funds.  Passport Capital, LLC, a Delaware limited liability company (&quot;Passport Capital&quot;) is the managing member of Passport Management.  John H. Burbank III, a natural person (&quot;Burbank&quot;), is the sole managing member of Passport Capital.  As a result, each of Passport Management, Passport Capital and Burbank may be considered to indirectly beneficially own the securities directly beneficially owned by Fund I and Fund II.</footnote>
        <footnote id="F3">Pursuant to Rule 16a-1(a)(2)(ii)(B) under the Securities Exchange Act of 1934, as amended (the &quot;Act&quot;), Mr. Burbank is deemed to be a beneficial owner of the shares beneficially owned by Fund I or Fund II only to the extent of the greater of his respective direct or indirect interest in the profits or capital account of such Funds.  Pursuant to Rule 16a-1(a)(4) under the Act, this filing shall not be deemed an admission that Mr. Burbank is, for purposes of Section 16 of the Act or otherwise, the beneficial owner of any securities owned by the Funds in excess of such amount.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ JOHN H BURBANK III</signatureName>
        <signatureDate>2008-01-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
