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

                                    Form 13F

                              Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: December 31, 2009

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     February 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:    120

Form 13F Information Table Value Total:    $1,661,848 (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
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
AIRCASTLE LTD                  COM              G0129K104    33821  3900000 SH       DEFINED 1 2 3 4 6     3900000        0        0
AIRCASTLE LTD                  COM              G0129K104    35706  3625000 SH       DEFINED 1 2 3 4 5     3625000        0        0
AIRCASTLE LTD                  COM              G0129K104   214237 21750002 SH       DEFINED 1 2 3 4      21750002        0        0
AIRCASTLE LTD                  COM              G0129K104     2816   285875 SH       DEFINED 1 2 3          285875        0        0
AMERICAN TOWER CORP            CL A             029912201     2545    58900 SH       DEFINED 1 2 3 4 9       58900        0        0
ANGLOGOLD ASHANTI LTD          SPONSORED ADR    035128206     4193   104334 SH       DEFINED 1 2 3          104334        0        0
ARCHER DANIELS MIDLAND CO      COM              039483102     6966   222500 SH       DEFINED 1 2 3 4 8      222500        0        0
ARCHER DANIELS MIDLAND CO      COM              039483102     2013    64300 SH       DEFINED 1 2 3 4 9       64300        0        0
ARMOUR RESIDENTIAL REIT INC    *W EXP 11/07/201 042315119       90   500000 SH       DEFINED 1 2 3 4 6      500000        0        0
AT&T INC                       COM              00206R102     2461    87800 SH       DEFINED 1 2 3 4 9       87800        0        0
AUTOZONE INC                   COM              053332102             11500 SH  CALL DEFINED 1 2 3 4 9       11500        0        0
AUTOZONE INC                   COM              053332102             62100 SH  PUT  DEFINED 1 2 3 4 9       62100        0        0
AVON PRODS INC                 COM              054303102     1260    40000 SH  PUT  DEFINED 1 2 3 4 9       40000        0        0
BARRICK GOLD CORP              COM              067901108      563    14300 SH       DEFINED 1 2 3 4 9       14300        0        0
BARRICK GOLD CORP              COM              067901108     1945    49400 SH       DEFINED 1 2 3 4 8       49400        0        0
BJS WHOLESALE CLUB INC         COM              05548J106     5947   181818 SH       DEFINED 1 2 3 4 9      181818        0        0
BOYD GAMING CORP               COM              103304101     1307   156200 SH  PUT  DEFINED 1 2 3 4 9      156200        0        0
BROOKDALE SR LIVING INC        COM              112463104   625196 34370292 SH       DEFINED 1 2 3 4      34370292        0        0
BROOKDALE SR LIVING INC        COM              112463104     1549    85176 SH       DEFINED 1 2 3 4 6       85176        0        0
BRUNSWICK CORP                 COM              117043109    16946  1333300 SH  PUT  DEFINED 1 2 3 4 9     1333300        0        0
BUNGE LIMITED                  COM              G16962105     2968    46500 SH       DEFINED 1 2 3 4 8       46500        0        0
BUNGE LIMITED                  COM              G16962105      855    13394 SH       DEFINED 1 2 3 4 9       13394        0        0
CARNIVAL CORP                  PAIRED CTF       143658300      905    28550 SH       DEFINED 1 2 3 4 9       28550        0        0
CARNIVAL CORP                  PAIRED CTF       143658300      951    30000 SH  CALL DEFINED 1 2 3 4 9       30000        0        0
CARNIVAL CORP                  PAIRED CTF       143658300     3565   112500 SH  PUT  DEFINED 1 2 3 4 9      112500        0        0
CENTURYTEL INC                 COM              156700106     2404    66400 SH       DEFINED 1 2 3 4 9       66400        0        0
CONSOL ENERGY INC              COM              20854P109     6265   125800 SH       DEFINED 1 2 3 4 8      125800        0        0
CONSOL ENERGY INC              COM              20854P109     1807    36295 SH       DEFINED 1 2 3 4 9       36295        0        0
CON-WAY INC                    COM              205944101     4398   134000 SH  PUT  DEFINED 1 2 3 4 9      134000        0        0
DANA HOLDING CORP              COM              235825205     3526   325231 SH       DEFINED 1 2 3 4 6      325231        0        0
DIAMOND OFFSHORE DRILLING IN   COM              25271C102     3049    30975 SH       DEFINED 1 2 3 4         30975        0        0
EBAY INC                       COM              278642103     6178   262426 SH       DEFINED 1 2 3 4 9      262426        0        0
EOG RES INC                    COM              26875P101     7910    81300 SH       DEFINED 1 2 3 4 8       81300        0        0
EOG RES INC                    COM              26875P101     2277    23400 SH       DEFINED 1 2 3 4 9       23400        0        0
FEDEX CORP                     COM              31428X106     1377    16500 SH  PUT  DEFINED 1 2 3 4 9       16500        0        0
FORD MTR CO DEL                COM PAR $0.01    345370860      110    11000 SH       DEFINED 1 2 3 4 9       11000        0        0
FORD MTR CO DEL                COM PAR $0.01    345370860     3000   300000 SH  PUT  DEFINED 1 2 3 4 9      300000        0        0
FREEPORT-MCMORAN COPPER & GO   COM              35671D857     2039    25400 SH       DEFINED 1 2 3 4 8       25400        0        0
FREEPORT-MCMORAN COPPER & GO   COM              35671D857      594     7400 SH       DEFINED 1 2 3 4 9        7400        0        0
FRONTIER COMMUNICATIONS CORP   COM              35906A108     2345   300300 SH       DEFINED 1 2 3 4 9      300300        0        0
GAP INC DEL                    COM              364760108     6234   297580 SH       DEFINED 1 2 3 4 9      297580        0        0
GENCO SHIPPING & TRADING LTD   SHS              Y2685T107      291    13000 SH  PUT  DEFINED 1 2 3 4 9       13000        0        0
GENERAL ELECTRIC CO            COM              369604103     4055   268000 SH  PUT  DEFINED 1 2 3 4 9      268000        0        0
GENESIS LEASE LTD              ADR              37183T107     2011   225200 SH       DEFINED 1 2 3          225200        0        0
GOLD FIELDS LTD NEW            SPONSORED ADR    38059T106     2648   202000 SH       DEFINED 1 2 3          202000        0        0
GRAINGER W W INC               COM              384802104     1259    13000 SH  PUT  DEFINED 1 2 3 4 9       13000        0        0
HASBRO INC                     COM              418056107     6774   211302 SH       DEFINED 1 2 3 4 9      211302        0        0
HESS CORP                      COM              42809H107    26980   472500 SH  CALL DEFINED 1 2 3 4 9      472500        0        0
ITT EDUCATIONAL SERVICES INC   COM              45068B109     2207    23000 SH  PUT  DEFINED 1 2 3 4 9       23000        0        0
JOHNSON CTLS INC               COM              478366107     3563   130800 SH       DEFINED 1 2 3 4 8      130800        0        0
JOHNSON CTLS INC               COM              478366107     1027    37700 SH       DEFINED 1 2 3 4 9       37700        0        0
JPMORGAN CHASE & CO            COM              46625H100    12918   310000 SH       DEFINED 1 2 3 4 6      310000        0        0
KOHLS CORP                     COM              500255104     5512   102200 SH       DEFINED 1 2 3 4 9      102200        0        0
LIBERTY ACQUISITION HLDGS CO   *W EXP 12/12/201 53015Y115      236   336900 SH       DEFINED 1 2 3 4 6      336900        0        0
MARKET VECTORS ETF TR          GOLD MINER ETF   57060U100     5314   115000 SH       DEFINED 1 2 3 4 9      115000        0        0
MARKET VECTORS ETF TR          GOLD MINER ETF   57060U100    18456   399400 SH       DEFINED 1 2 3 4 8      399400        0        0
MASCO CORP                     COM              574599106     1933   140000 SH  PUT  DEFINED 1 2 3 4 9      140000        0        0
MCDONALDS CORP                 COM              580135101     6556   104990 SH       DEFINED 1 2 3 4 9      104990        0        0
METROPCS COMMUNICATIONS INC    COM              591708102     2802   367300 SH       DEFINED 1 2 3 4 9      367300        0        0
MGM MIRAGE                     COM              552953101     9558  1048000 SH  PUT  DEFINED 1 2 3 4 9     1048000        0        0
MGM MIRAGE                     COM              552953101      234    25700 SH       DEFINED 1 2 3 4 9       25700        0        0
MOHAWK INDS INC                COM              608190104     1666    35000 SH  PUT  DEFINED 1 2 3 4 9       35000        0        0
MOHAWK INDS INC                COM              608190104      745    15653 SH       DEFINED 1 2 3 4 9       15653        0        0
MONSANTO CO NEW                COM              61166W101     1570    19200 SH       DEFINED 1 2 3 4 9       19200        0        0
MONSANTO CO NEW                COM              61166W101     2109    25800 SH       DEFINED 1 2 3 4 8       25800        0        0
MOSAIC CO                      COM              61945A107     1876    31400 SH       DEFINED 1 2 3 4 9       31400        0        0
NAVIOS MARITIME ACQUIS CORP    *W EXP 06/25/201 Y62159119      743  1250000 SH       DEFINED 1 2 3 4 6     1250000        0        0
NEWCASTLE INVT CORP            COM              65105M108      401   191600 SH       DEFINED 1 2 3          191600        0        0
NEWCASTLE INVT CORP            COM              65105M108     2144  1025729 SH       DEFINED 01            1025729        0        0
NEWS CORP                      CL A             65248E104     3592   262400 SH       DEFINED 1 2 3 4 9      262400        0        0
NORTHWESTERN CORP              COM NEW          668074305    21996   845347 SH       DEFINED 1 2 3 4        845347        0        0
NUCOR CORP                     COM              670346105     1223    26217 SH       DEFINED 1 2 3 4 9       26217        0        0
NUCOR CORP                     COM              670346105     1166    25000 SH  CALL DEFINED 1 2 3 4 9       25000        0        0
NUCOR CORP                     COM              670346105     1749    37500 SH  PUT  DEFINED 1 2 3 4 9       37500        0        0
ODYSSEY MARINE EXPLORATION I   COM              676118102     1143   810781 SH       DEFINED 1 2 3 4 5      810781        0        0
OLD DOMINION FGHT LINES INC    COM              679580100     2303    75000 SH  PUT  DEFINED 1 2 3 4 9       75000        0        0
PACCAR INC                     COM              693718108     2295    63000 SH  PUT  DEFINED 1 2 3 4 9       63000        0        0
PARKER HANNIFIN CORP           COM              701094104      986    18300 SH       DEFINED 1 2 3 4 9       18300        0        0
PARKER HANNIFIN CORP           COM              701094104     3432    63700 SH       DEFINED 1 2 3 4 8       63700        0        0
PEABODY ENERGY CORP            COM              704549104     5118   113200 SH       DEFINED 1 2 3 4 8      113200        0        0
PEABODY ENERGY CORP            COM              704549104     1469    32500 SH       DEFINED 1 2 3 4 9       32500        0        0
PENN NATL GAMING INC           COM              707569109     4291   157823 SH       DEFINED 1 2 3 4        157823        0        0
POTASH CORP SASK INC           COM              73755L107     1009     9300 SH       DEFINED 1 2 3 4 9        9300        0        0
QWEST COMMUNICATIONS INTL IN   COM              749121109     2590   615300 SH       DEFINED 1 2 3 4 9      615300        0        0
RAILAMERICA INC                COM              750753402   370270 30350000 SH       DEFINED 1 2 3 4      30350000        0        0
RALCORP HLDGS INC NEW          COM              751028101     5490    91948 SH       DEFINED 1 2 3 4 9       91948        0        0
ROYAL BK SCOTLAND GROUP PLC    ADR PFD SER P    780097762       62     6050 SH       DEFINED 1 2 3            6050        0        0
ROYAL BK SCOTLAND GROUP PLC    ADR PFD SER P    780097762      122    11950 SH       DEFINED 1 2 3 4 6       11950        0        0
ROYAL BK SCOTLAND GROUP PLC    ADR PREF SER N   780097770      412    39850 SH       DEFINED 1 2 3           39850        0        0
ROYAL BK SCOTLAND GROUP PLC    ADR PREF SER N   780097770      914    88308 SH       DEFINED 1 2 3 4 6       88308        0        0
ROYAL BK SCOTLAND GROUP PLC    ADR PREF SHS Q   780097754      138    12566 SH       DEFINED 1 2 3 4 6       12566        0        0
ROYAL BK SCOTLAND GROUP PLC    ADR PREF SHS R   780097747      169    16632 SH       DEFINED 1 2 3           16632        0        0
ROYAL BK SCOTLAND GROUP PLC    ADR PREF SHS R   780097747      357    35133 SH       DEFINED 1 2 3 4 6       35133        0        0
ROYAL BK SCOTLAND GROUP PLC    SP ADR PREF M    780097796      376    35800 SH       DEFINED 1 2 3 4 6       35800        0        0
ROYAL BK SCOTLAND GROUP PLC    SP ADR PREF S    780097739     4786   439875 SH       DEFINED 1 2 3 4 6      439875        0        0
ROYAL BK SCOTLAND GROUP PLC    SP ADR PREF S    780097739     1947   178975 SH       DEFINED 1 2 3          178975        0        0
ROYAL BK SCOTLAND GROUP PLC    SP ADR PREF T    780097713     5689   478500 SH       DEFINED 1 2 3 4 6      478500        0        0
SAKS INC                       COM              79377W108      153    23294 SH       DEFINED 1 2 3 4 9       23294        0        0
SAKS INC                       COM              79377W108     1312   200000 SH  PUT  DEFINED 1 2 3 4 9      200000        0        0
SAPPHIRE INDUSTRIALS CORP      *W EXP 01/17/201 80306T117      120  1000000 SH       DEFINED 1 2 3 4 6     1000000        0        0
SELECT SECTOR SPDR TR          SBI INT-ENERGY   81369Y506      685    12010 SH       DEFINED 1 2 3 4 9       12010        0        0
SELECT SECTOR SPDR TR          SBI MATERIALS    81369Y100    11197   339300 SH       DEFINED 1 2 3 4 8      339300        0        0
SELECT SECTOR SPDR TR          SBI MATERIALS    81369Y100     3224    97700 SH       DEFINED 1 2 3 4 9       97700        0        0
SLM CORP                       COM              78442P106      850    75400 SH       DEFINED 1 2 3 4 9       75400        0        0
SMITHFIELD FOODS INC           COM              832248108     7349   483800 SH  PUT  DEFINED 1 2 3 4 9      483800        0        0
SPDR SERIES TRUST              S&P RETAIL ETF   78464A714     2207    62000 SH  PUT  DEFINED 1 2 3 4 9       62000        0        0
SPRINT NEXTEL CORP             COM SER 1        852061100     2307   630200 SH       DEFINED 1 2 3 4 9      630200        0        0
TIFFANY & CO NEW               COM              886547108     1118    26000 SH  PUT  DEFINED 1 2 3 4 9       26000        0        0
TORCHMARK CORP                 COM              891027104     1846    42000 SH  PUT  DEFINED 1 2 3 4 9       42000        0        0
TRIAN ACQUISITION I CORP       *W EXP 01/23/201 89582E116      223   798200 SH       DEFINED 1 2 3 4 6      798200        0        0
TWO HBRS INVT CORP             *W EXP 07/13/201 90187B119      322   750000 SH       DEFINED 1 2 3 4 6      750000        0        0
UNION PAC CORP                 COM              907818108     1304    20400 SH       DEFINED 1 2 3 4 9       20400        0        0
UNION PAC CORP                 COM              907818108     4518    70700 SH       DEFINED 1 2 3 4 8       70700        0        0
UNITED STATES STL CORP NEW     COM              912909108     1784    32370 SH       DEFINED 1 2 3 4 9       32370        0        0
VERIZON COMMUNICATIONS INC     COM              92343V104     2438    73600 SH       DEFINED 1 2 3 4 9       73600        0        0
WAL MART STORES INC            COM              931142103    11925   223114 SH       DEFINED 1 2 3 4 9      223114        0        0
WELLS FARGO & CO NEW           COM              949746101    10391   385000 SH       DEFINED 1 2 3 4 6      385000        0        0
WHX CORP                       COM PAR $.01 NEW 929248607      261   108733 SH       DEFINED 1 2 3          108733        0        0
WILLBROS GROUP INC DEL         COM              969203108      765    45350 SH       DEFINED 1 2 3 4         45350        0        0
WINDSTREAM CORP                COM              97381W104     2549   231900 SH       DEFINED 1 2 3 4 9      231900        0        0