UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                    Form 13F

                              Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: June 30, 2010

Check here if Amendment [  ]; Amendment Number:
This Amendment (Check only one.): [  ] is a restatement.
                                  [  ] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:    Fortress Investment Group LLC
Address: 1345 Avenue of the Americas, 46th Flr.
         New York, NY  10105

13F File Number:  028-12421

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:      David Brooks
Title:     Secretary, VP and General Counsel
Phone:     212-798-6100

Signature, Place, and Date of Signing:

  /s/  David Brooks     New York, NY     August 16, 2010

Report Type (Check only one.):

[ X]         13F HOLDINGS REPORT.

[  ]         13F NOTICE.

[  ]         13F COMBINATION REPORT.



                              FORM 13F SUMMARY PAGE

Report Summary:

Number of Other Included Managers:         8

Form 13F Information Table Entry Total:    116

Form 13F Information Table Value Total:    $1,395,910 (thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional managers with respect to which this report is filed, other
than the manager filing this report.

No.  13F File Number               Name

1    28-12421                      Fortress Investment Group LLC
2    28-12417                      FIG Corp
3    28-12418                      Fortress Operating Entity I LP
4    28-10806                      FIG LLC
5    28-10807                      Drawbridge Global Macro Advisors LLC
6    28-11237                      Drawbridge Special Opportunities Advisors LLC
7    28-10162                      FIG Advisors LLC
8    28-13249                      Fortress Commodities Advisors LLC
9    28-13498                      Fortress Macro Advisors LLC



                                    
                                                     FORM 13F INFORMATION TABLE
                                                             VALUE  SHARES/ SH/ PUT/ INVSTMT  OTHER            VOTING AUTHORITY
NAME OF ISSUER                 TITLE OF CLASS   CUSIP     (x$1000)  PRN AMT PRN CALL DSCRETN MANAGERS         SOLE   SHARED     NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
ABOVENET INC                   COM              00374N107     2784    59000 SH       DEFINED 1 2 3           59000        0        0
ADVANCED MICRO DEVICES INC     COM              007903107      856   116940 SH       DEFINED 1 2 3 4 9      116940        0        0
AIRCASTLE LTD                  COM              G0129K104     2244   285875 SH       DEFINED 1 2 3          285875        0        0
AIRCASTLE LTD                  COM              G0129K104    30615  3900000 SH       DEFINED 1 2 3 4 6     3900000        0        0
AIRCASTLE LTD                  COM              G0129K104   170737 21750002 SH       DEFINED 1 2 3 4      21750002        0        0
ALLIED HEALTHCARE INTL INC     COM              01923A109     1785   769645 SH       DEFINED 1 2 3          769645        0        0
AMERICAN AXLE & MFG HLDGS IN   COM              024061103      799   109000 SH       DEFINED 1 2 3 4 9      109000        0        0
AMERICAN AXLE & MFG HLDGS IN   COM              024061103     1906   260000 SH  PUT  DEFINED 1 2 3 4 9      260000        0        0
AMERICAN CAP LTD               COM              02503Y103      254    52642 SH       DEFINED 1 2 3 4         52642        0        0
AMERICAN CAP LTD               COM              02503Y103    80149 16614434 SH       DEFINED 1 2 3 4 6    16614434        0        0
ANGLOGOLD ASHANTI LTD          SPONSORED ADR    035128206     4505   104334 SH       DEFINED 1 2 3          104334        0        0
ANSWERS CORP                   COM              03662X100     1947   266005 SH       DEFINED 1 2 3          266005        0        0
APPLE INC                      COM              037833100     6574    26138 SH       DEFINED 1 2 3 4 9       26138        0        0
APPLE INC                      COM              037833100      770     3062 SH       DEFINED 1 2 3 4          3062        0        0
BAIDU INC                      SPON ADR REP A   056752108      693    10175 SH       DEFINED 1 2 3 4         10175        0        0
BAIDU INC                      SPON ADR REP A   056752108     5637    82795 SH       DEFINED 1 2 3 4 9       82795        0        0
BARCLAYS BK PLC                IPATH S&P ST ETN 06740C527     2504    80200 SH       DEFINED 1 2 3 4         80200        0        0
BARCLAYS BK PLC                IPATH S&P ST ETN 06740C527     3444   110300 SH       DEFINED 1 2 3 4 9      110300        0        0
BARCLAYS BK PLC                IPATH S&P ST ETN 06740C527    12707   407000 SH       DEFINED 1 2 3 4 8      407000        0        0
BARRICK GOLD CORP              COM              067901108     5724   133300 SH  CALL DEFINED 1 2 3 4        133300        0        0
BARRICK GOLD CORP              COM              067901108     7910   184200 SH  CALL DEFINED 1 2 3 4 9      184200        0        0
BARRICK GOLD CORP              COM              067901108    29156   679000 SH  CALL DEFINED 1 2 3 4 8      679000        0        0
BEAZER HOMES USA INC           COM              07556Q105     1763   485600 SH       DEFINED 1 2 3 4 9      485600        0        0
BOYD GAMING CORP               COM              103304101      386    45500 SH       DEFINED 1 2 3 4 9       45500        0        0
BROADWIND ENERGY INC           COM              11161T108      949   339028 SH       DEFINED 1 2 3          339028        0        0
BROOKDALE SR LIVING INC        COM              112463104   414821 27654762 SH       DEFINED 1 2 3 4      27605962        0        0
CHEESECAKE FACTORY INC         COM              163072101       97     4373 SH       DEFINED 1 2 3 4          4373        0        0
CHEESECAKE FACTORY INC         COM              163072101     1672    75127 SH       DEFINED 1 2 3 4 9       75127        0        0
CLEARWATER PAPER CORP          COM              18538R103      936    17084 SH       DEFINED 1 2 3 4         17084        0        0
CLEARWATER PAPER CORP          COM              18538R103    17774   324587 SH       DEFINED 1 2 3 4 6      324587        0        0
COLDWATER CREEK INC            COM              193068103       79    23500 SH       DEFINED 1 2 3           23500        0        0
CORCEPT THERAPEUTICS INC       COM              218352102     1888   605086 SH       DEFINED 1 2 3          605086        0        0
CROSSTEX ENERGY INC            COM              22765Y104       99    15400 SH       DEFINED 1 2 3           15400        0        0
DEVON ENERGY CORP NEW          COM              25179M103      621    10200 SH       DEFINED 1 2 3 4         10200        0        0
DEVON ENERGY CORP NEW          COM              25179M103     5008    82200 SH       DEFINED 1 2 3 4 9       82200        0        0
DIAMOND OFFSHORE DRILLING IN   COM              25271C102     1926    30975 SH       DEFINED 1 2 3 4         30975        0        0
DISCOVERY COMMUNICATNS NEW     COM SER A        25470F104      145     4050 SH       DEFINED 1 2 3 4          4050        0        0
DISCOVERY COMMUNICATNS NEW     COM SER A        25470F104     1116    31250 SH       DEFINED 1 2 3 4 9       31250        0        0
EL PASO CORP                   COM              28336L109     1000    90000 SH       DEFINED 1 2 3 4 9       90000        0        0
EMULEX CORP                    COM NEW          292475209       95    10400 SH       DEFINED 1 2 3           10400        0        0
EXCO RESOURCES INC             COM              269279402     1942   132900 SH       DEFINED 1 2 3 4 8      132900        0        0
EXCO RESOURCES INC             COM              269279402      379    26000 SH       DEFINED 1 2 3 4         26000        0        0
EXCO RESOURCES INC             COM              269279402      527    36100 SH       DEFINED 1 2 3 4 9       36100        0        0
EXIDE TECHNOLOGIES             COM NEW          302051206      620   119124 SH       DEFINED 1 2 3          119124        0        0
FIDELITY NATL INFORMATION SV   COM              31620M106     7644   285000 SH       DEFINED 1 2 3 4 6      285000        0        0
FIDELITY NATL INFORMATION SV   COM              31620M106      402    15000 SH       DEFINED 1 2 3 4         15000        0        0
FORD MTR CO DEL                COM PAR $0.01    345370860     3024   300000 SH  PUT  DEFINED 1 2 3 4 9      300000        0        0
GENERAL GROWTH PPTYS INC       COM              370021107      416    31338 SH       DEFINED 1 2 3 4         31338        0        0
GLOBAL GEOPHYSICAL SVCS INC    COM              37946S107       91    13000 SH       DEFINED 1 2 3           13000        0        0
GOLD FIELDS LTD NEW            SPONSORED ADR    38059T106     2701   202000 SH       DEFINED 1 2 3          202000        0        0
GOOGLE INC                     CL A             38259P508      356      800 SH       DEFINED 1 2 3 4           800        0        0
GOOGLE INC                     CL A             38259P508     2447     5500 SH  CALL DEFINED 1 2 3 4          5500        0        0
GOOGLE INC                     CL A             38259P508     3204     7200 SH       DEFINED 1 2 3 4 9        7200        0        0
GOOGLE INC                     CL A             38259P508    21091    47400 SH  CALL DEFINED 1 2 3 4 9       47400        0        0
HEWLETT PACKARD CO             COM              428236103      216     5000 SH       DEFINED 1 2 3 4          5000        0        0
HEWLETT PACKARD CO             COM              428236103     1671    38600 SH       DEFINED 1 2 3 4 9       38600        0        0
HOLLY CORP                     COM PAR $0.01    435758305      553    20800 SH       DEFINED 1 2 3 4 9       20800        0        0
HOLLY CORP                     COM PAR $0.01    435758305     2039    76700 SH       DEFINED 1 2 3 4 8       76700        0        0
HOLLY CORP                     COM PAR $0.01    435758305      399    15000 SH       DEFINED 1 2 3 4         15000        0        0
HORIZON LINES INC              COM              44044K101       97    23000 SH       DEFINED 1 2 3           23000        0        0
IGO INC                        COM              449593102      402   267680 SH       DEFINED 1 2 3          267680        0        0
INTERPUBLIC GROUP COS INC      COM              460690100       86    12000 SH       DEFINED 1 2 3           12000        0        0
ITAU UNIBANCO HLDG SA          SPON ADR REP PFD 465562106      281    15600 SH       DEFINED 1 2 3 4         15600        0        0
ITAU UNIBANCO HLDG SA          SPON ADR REP PFD 465562106     2421   134400 SH       DEFINED 1 2 3 4 9      134400        0        0
LAM RESEARCH CORP              COM              512807108       99     2600 SH       DEFINED 1 2 3 4          2600        0        0
LAM RESEARCH CORP              COM              512807108      807    21200 SH       DEFINED 1 2 3 4 9       21200        0        0
LAS VEGAS SANDS CORP           COM              517834107      582    26300 SH       DEFINED 1 2 3 4         26300        0        0
LAS VEGAS SANDS CORP           COM              517834107     4687   211700 SH       DEFINED 1 2 3 4 9      211700        0        0
LIBERTY ACQUISITION HLDGS CO   *W EXP 12/12/201 53015Y115       44    43115 SH       DEFINED 1 2 3 4         43115        0        0
LIBERTY ACQUISITION HLDGS CO   *W EXP 12/12/201 53015Y115      836   819185 SH       DEFINED 1 2 3 4 6      819185        0        0
MARATHON OIL CORP              COM              565849106     4667   150100 SH       DEFINED 1 2 3 4 9      150100        0        0
MARATHON OIL CORP              COM              565849106      886    28500 SH       DEFINED 1 2 3 4         28500        0        0
MARATHON OIL CORP              COM              565849106     1909    61400 SH       DEFINED 1 2 3 4 8       61400        0        0
MASCO CORP                     COM              574599106     1579   146773 SH       DEFINED 1 2 3 4 9      146773        0        0
MCCLATCHY CO                   CL A             579489105       89    24500 SH       DEFINED 1 2 3           24500        0        0
MEMC ELECTR MATLS INC          COM              552715104      791    80100 SH       DEFINED 1 2 3 4         80100        0        0
MEMC ELECTR MATLS INC          COM              552715104     6348   642500 SH       DEFINED 1 2 3 4 9      642500        0        0
MGM MIRAGE                     COM              552953101     3413   273500 SH  PUT  DEFINED 1 2 3 4 9      273500        0        0
MPG OFFICE TR INC              COM              553274101       15     5000 SH       DEFINED 1 2 3 4          5000        0        0
MPG OFFICE TR INC              COM              553274101      279    95000 SH       DEFINED 1 2 3 4 6       95000        0        0
NEWCASTLE INVT CORP            COM              65105M108      513   191600 SH       DEFINED 1 2 3          191600        0        0
NEWCASTLE INVT CORP            COM              65105M108     2747  1025729 SH       DEFINED 1             1025729        0        0
NORTH AMERN PALLADIUM LTD      COM              656912102       94    30100 SH       DEFINED 1 2 3           30100        0        0
NORTHWESTERN CORP              COM NEW          668074305    22148   845347 SH       DEFINED 1 2 3 4        845347        0        0
NPS PHARMACEUTICALS INC        COM              62936P103     1926   298925 SH       DEFINED 1 2 3          298925        0        0
OCLARO INC                     COM NEW          67555N206     1699   153208 SH       DEFINED 1 2 3          153208        0        0
PENN NATL GAMING INC           COM              707569109     3645   157823 SH       DEFINED 1 2 3 4        157823        0        0
PRICELINE COM INC              COM NEW          741503403     8244    46700 SH  CALL DEFINED 1 2 3 4 9       46700        0        0
PRICELINE COM INC              COM NEW          741503403     6885    39000 SH       DEFINED 1 2 3 4 9       39000        0        0
PRICELINE COM INC              COM NEW          741503403     1024     5800 SH  CALL DEFINED 1 2 3 4          5800        0        0
PRICELINE COM INC              COM NEW          741503403      830     4700 SH       DEFINED 1 2 3 4          4700        0        0
RAILAMERICA INC                COM              750753402   301072 30350000 SH       DEFINED 1 2 3 4      30350000        0        0
SALESFORCE COM INC             COM              79466L302      283     3300 SH       DEFINED 1 2 3 4          3300        0        0
SALESFORCE COM INC             COM              79466L302     2188    25500 SH       DEFINED 1 2 3 4 9       25500        0        0
SELECT SECTOR SPDR TR          SBI INT-ENERGY   81369Y506     3115    62700 SH  CALL DEFINED 1 2 3 4         62700        0        0
SELECT SECTOR SPDR TR          SBI INT-ENERGY   81369Y506    24924   501700 SH  CALL DEFINED 1 2 3 4 9      501700        0        0
SILICON IMAGE INC              COM              82705T102      108    30800 SH       DEFINED 1 2 3           30800        0        0
SPANSION INC                   COM CL A NEW     84649R200      338    20731 SH       DEFINED 1 2 3 4         20731        0        0
SPANSION INC                   COM CL A NEW     84649R200     7899   484277 SH       DEFINED 1 2 3          484277        0        0
SPANSION INC                   COM CL A NEW     84649R200    10325   633101 SH       DEFINED 1 2 3 4 6      633101        0        0
SPDR SERIES TRUST              S&P RETAIL ETF   78464A714    31689   888900 SH  PUT  DEFINED 1 2 3 4 9      888900        0        0
SPDR SERIES TRUST              S&P RETAIL ETF   78464A714     3961   111100 SH  PUT  DEFINED 1 2 3 4        111100        0        0
STARBUCKS CORP                 COM              855244109      105     4320 SH       DEFINED 1 2 3 4          4320        0        0
STARBUCKS CORP                 COM              855244109     1804    74230 SH       DEFINED 1 2 3 4 9       74230        0        0
TRANSOCEAN INC                 NOTE 1.500%12/1  893830AW9      683   820000 PRN      DEFINED 1 2 3 4        820000        0        0
TRANSOCEAN INC                 NOTE 1.500%12/1  893830AW9    12972 15580000 PRN      DEFINED 1 2 3 4 6    15580000        0        0
TW TELECOM INC                 COM              87311L104     1851   111000 SH       DEFINED 1 2 3          111000        0        0
VALE S A                       ADR              91912E105     4400   180700 SH  PUT  DEFINED 1 2 3 4        180700        0        0
VALE S A                       ADR              91912E105     6075   249500 SH  PUT  DEFINED 1 2 3 4 9      249500        0        0
VALE S A                       ADR              91912E105    22397   919800 SH  PUT  DEFINED 1 2 3 4 8      919800        0        0
WCA WASTE CORP                 COM              92926K103      912   204444 SH       DEFINED 1 2 3 4        204444        0        0
WHX CORP                       COM PAR $.01 NEW 929248607      463   108733 SH       DEFINED 1 2 3          108733        0        0
WILLBROS GROUP INC DEL         COM              969203108      336    45350 SH       DEFINED 1 2 3 4         45350        0        0
XEROX CORP                     COM              984121103       88    11000 SH       DEFINED 1 2 3           11000        0        0
YAHOO INC                      COM              984332106     3603   260500 SH       DEFINED 1 2 3 4 9      260500        0        0
YAHOO INC                      COM              984332106      449    32500 SH       DEFINED 1 2 3 4         32500        0        0