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

                                    Form 13F

                              Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: September 30, 2011

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     November 14, 2011

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:    132

Form 13F Information Table Value Total:    $1,381,117 (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    028-12421                  Fortress Investment Group LLC
2    028-12417                  FIG Corp
3    028-12418                  Fortress Operating Entity I LP
4    028-10806                  FIG LLC
5    028-10807                  Drawbridge Global Macro Advisors LLC
6    028-11237                  Drawbridge Special Opportunities Advisors LLC
7    028-10162                  FIG Advisors LLC
8    028-13249                  Fortress Commodities Advisors LLC
9    028-13498                  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     4877    91000 SH       DEFINED 1 2 3           91000        0        0
ADOBE SYS INC                  COM              00724F101     2155    82500 SH  PUT  DEFINED 1 2 3 4         82500        0        0
ADOBE SYS INC                  COM              00724F101    10383   397500 SH  PUT  DEFINED 1 2 3 4 9      397500        0        0
AIRCASTLE LTD                  COM              G0129K104     2721   285875 SH       DEFINED 1 2 3          285875        0        0
AIRCASTLE LTD                  COM              G0129K104   159460 16750002 SH       DEFINED 1 2 3 4      16750002        0        0
AMERICAN AXLE & MFG HLDGS IN   COM              024061103     1610   211000 SH       DEFINED 1 2 3 4 9      211000        0        0
AMERICAN AXLE & MFG HLDGS IN   COM              024061103     6104   800000 SH  PUT  DEFINED 1 2 3 4 9      800000        0        0
AMERICAN CAP LTD               COM              02503Y103   122791 18029806 SH       DEFINED 1 2 3 4      18029806        0        0
AMERICAN CAP LTD               COM              02503Y103    28928  4241600 SH       DEFINED 1 2 3 4 6     4241600        0        0
AMERISTAR CASINOS INC          COM              03070Q101     1882   117200 SH       DEFINED 1 2 3          117200        0        0
ANGLOGOLD ASHANTI LTD          SPONSORED ADR    035128206     4315   104334 SH       DEFINED 1 2 3          104334        0        0
APOLLO GLOBAL MGMT LLC         CL A SHS         037612306       72     6940 SH       DEFINED 1 2 3 4          6940        0        0
APOLLO GLOBAL MGMT LLC         CL A SHS         037612306      529    51687 SH       DEFINED 1 2 3 4 6       51687        0        0
BANK OF AMERICA CORPORATION    COM              060505104     2050   335000 SH       DEFINED 1 2 3 4 6      335000        0        0
BROOKDALE SR LIVING INC        COM              112463104   220626 17593826 SH       DEFINED 1 2 3 4      17593826        0        0
CAMECO CORP                    COM              13321L108     2674   146000 SH       DEFINED 1 2 3          146000        0        0
CHECK POINT SOFTWARE TECH LT   ORD              M22465104     9597   181900 SH  CALL DEFINED 1 2 3 4 9      181900        0        0
CHECK POINT SOFTWARE TECH LT   ORD              M22465104     1630    30900 SH  CALL DEFINED 1 2 3 4         30900        0        0
CHEMTURA CORP                  COM NEW          163893209       63     6305 SH       DEFINED 1 2 3            6305        0        0
CHEMTURA CORP                  COM NEW          163893209       37     3683 SH       DEFINED 1 2 3 4 9        3683        0        0
CHICAGO BRIDGE & IRON CO N V   N Y REGISTRY SH  167250109     1002    35000 SH       DEFINED 1 2 3 4 9       35000        0        0
CHUBB CORP                     COM              171232101     2752    45880 SH       DEFINED 1 2 3 4 9       45880        0        0
CIT GROUP INC                  COM NEW          125581801    47668  1475000 SH       DEFINED 1 2 3 4       1475000        0        0
CITIGROUP INC                  CALL             172967904     7172   280000 SH  CALL DEFINED 1 2 3 4 6      280000        0        0
CITIGROUP INC                  COM NEW          172967424     5123   200000 SH       DEFINED 1 2 3 4 6      200000        0        0
CITIGROUP INC                  COM NEW          172967424     2562   100000 SH       DEFINED 1 2 3 4 9      100000        0        0
COACH INC                      COM              189754104     1871    36100 SH  PUT  DEFINED 1 2 3 4         36100        0        0
COACH INC                      COM              189754104     9013   173900 SH  PUT  DEFINED 1 2 3 4 9      173900        0        0
CORNERSTONE ONDEMAND INC       COM              21925Y103      525    41897 SH       DEFINED 1 2 3 4         41897        0        0
CORNERSTONE ONDEMAND INC       COM              21925Y103     3187   254200 SH       DEFINED 1 2 3 4 9      254200        0        0
DANAHER CORP DEL               COM              235851102     1017    24242 SH       DEFINED 1 2 3 4         24242        0        0
DANAHER CORP DEL               COM              235851102    15147   361161 SH       DEFINED 1 2 3 4 6      361161        0        0
DELTA AIR LINES INC DEL        COM NEW          247361702      358    47797 SH       DEFINED 1 2 3 4         47797        0        0
DELTA AIR LINES INC DEL        COM NEW          247361702     1875   250000 SH       DEFINED 1 2 3 4 9      250000        0        0
DIAMOND OFFSHORE DRILLING IN   COM              25271C102     1696    30975 SH       DEFINED 1 2 3 4         30975        0        0
EASTMAN KODAK CO               COM              277461109     2290   500000 SH  PUT  DEFINED 1 2 3 4 9      500000        0        0
EBAY INC                       COM              278642103     2246    65300 SH  PUT  DEFINED 1 2 3 4         65300        0        0
EBAY INC                       COM              278642103    10823   314700 SH  PUT  DEFINED 1 2 3 4 9      314700        0        0
ELECTRONIC ARTS INC            COM              285512109      645    31555 SH       DEFINED 1 2 3 4         31555        0        0
ELECTRONIC ARTS INC            COM              285512109     3136   153345 SH       DEFINED 1 2 3 4 9      153345        0        0
EMBRAER S A                    SP ADR REP 4 COM 29082A107     2156    85000 SH       DEFINED 1 2 3 4 9       85000        0        0
ENSCO PLC                      SPONSORED ADR    29358Q109     1306    32300 SH       DEFINED 1 2 3 4 9       32300        0        0
ENSCO PLC                      SPONSORED ADR    29358Q109      942    23300 SH       DEFINED 1 2 3 4         23300        0        0
ENSCO PLC                      SPONSORED ADR    29358Q109     3065    75800 SH       DEFINED 1 2 3 4 8       75800        0        0
EQUINIX INC                    COM NEW          29444U502     1075    12100 SH  PUT  DEFINED 1 2 3 4         12100        0        0
EQUINIX INC                    COM NEW          29444U502     6920    77900 SH  PUT  DEFINED 1 2 3 4 9       77900        0        0
FASTENAL CO                    COM              311900104     1464    44000 SH       DEFINED 1 2 3 4 9       44000        0        0
FIFTH THIRD BANCORP            COM              316773100     1965   194580 SH       DEFINED 1 2 3 4 9      194580        0        0
FLOWSERVE CORP                 COM              34354P105     1887    20000 SH  CALL DEFINED 1 2 3 4 9       20000        0        0
FUSION-IO INC                  COM              36112J107       42     2200 SH       DEFINED 1 2 3 4 9        2200        0        0
FUSION-IO INC                  COM              36112J107       12      600 SH       DEFINED 1 2 3 4           600        0        0
FXCM INC                       COM CL A         302693106     1262    90000 SH       DEFINED 1 2 3 4 9       90000        0        0
GAFISA S A                     SPONS ADR        362607301      923   160000 SH       DEFINED 1 2 3 4 9      160000        0        0
GENERAL GROWTH PPTYS INC NEW   COM              370023103      389    32160 SH       DEFINED 1 2 3 4         32160        0        0
GLOBAL EAGLE ACQUISITION COR   UNIT 99/99/9999  37951D201      542    53937 SH       DEFINED 1 2 3 4         53937        0        0
GLOBAL EAGLE ACQUISITION COR   UNIT 99/99/9999  37951D201     8076   803563 SH       DEFINED 1 2 3 4 6      803563        0        0
GLOBAL X FDS                   GLB X URANIUM    37950E754      546    69000 SH       DEFINED 1 2 3           69000        0        0
GOLD FIELDS LTD NEW            SPONSORED ADR    38059T106     3094   202000 SH       DEFINED 1 2 3          202000        0        0
HOWARD HUGHES CORP             COM              44267D107      130     3081 SH       DEFINED 1 2 3 4          3081        0        0
HUNTINGTON BANCSHARES INC      COM              446150104     2399   499800 SH       DEFINED 1 2 3 4 9      499800        0        0
IGO INC                        COM              449593102      342   267680 SH       DEFINED 1 2 3          267680        0        0
INTERNATIONAL BUSINESS MACHS   COM              459200101     4078    23300 SH  PUT  DEFINED 1 2 3 4         23300        0        0
INTERNATIONAL BUSINESS MACHS   COM              459200101    19288   110200 SH  PUT  DEFINED 1 2 3 4 9      110200        0        0
ISTAR FINL INC                 COM              45031U101       74    12680 SH       DEFINED 1 2 3 4         12680        0        0
ISTAR FINL INC                 COM              45031U101      821   141113 SH       DEFINED 1 2 3 4 6      141113        0        0
KKR & CO L P DEL               COM UNITS        48248M102      276    26563 SH       DEFINED 1 2 3 4         26563        0        0
KKR & CO L P DEL               COM UNITS        48248M102     3984   383071 SH       DEFINED 1 2 3 4 6      383071        0        0
KKR & CO L P DEL               COM UNITS        48248M102     5553   534000 SH       DEFINED 1 2 3          534000        0        0
LEAR CORP                      COM NEW          521865204     1888    44000 SH       DEFINED 1 2 3 4 9       44000        0        0
LIONS GATE ENTMNT CORP         COM NEW          535919203       24     3400 SH       DEFINED 1 2 3 4          3400        0        0
LIONS GATE ENTMNT CORP         COM NEW          535919203       80    11600 SH       DEFINED 1 2 3 4 9       11600        0        0
LIZ CLAIBORNE INC              COM              539320101     2498   499500 SH  CALL DEFINED 1 2 3 4 9      499500        0        0
LORILLARD INC                  COM              544147101     6642    60000 SH  PUT  DEFINED 1 2 3 4 9       60000        0        0
LORILLARD INC                  COM              544147101      686     6200 SH       DEFINED 1 2 3 4 9        6200        0        0
MPG OFFICE TR INC              COM              553274101       11     5000 SH       DEFINED 1 2 3 4          5000        0        0
MPG OFFICE TR INC              COM              553274101      159    75285 SH       DEFINED 1 2 3 4 6       75285        0        0
MSC INDL DIRECT INC            CL A             553530106     1468    26000 SH       DEFINED 1 2 3 4 9       26000        0        0
NETAPP INC                     COM              64110D104     3593    73800 SH  CALL DEFINED 1 2 3 4         73800        0        0
NETAPP INC                     COM              64110D104    17343   356200 SH  CALL DEFINED 1 2 3 4 9      356200        0        0
NEWCASTLE INVT CORP            COM              65105M108     4175  1025729 SH       DEFINED 1             1025729        0        0
NEWCASTLE INVT CORP            COM              65105M108      780   191600 SH       DEFINED 1 2 3          191600        0        0
ON TRACK INNOVATION LTD        SHS              M8791A109     1097   731525 SH       DEFINED 1 2 3          731525        0        0
PACCAR INC                     COM              693718108      338    10000 SH       DEFINED 1 2 3 4 9       10000        0        0
PACKAGING CORP AMER            COM              695156109     1841    79000 SH       DEFINED 1 2 3 4 9       79000        0        0
PENN NATL GAMING INC           COM              707569109     5253   157823 SH       DEFINED 1 2 3 4        157823        0        0
PHH CORP                       COM NEW          693320202     3216   200000 SH       DEFINED 1 2 3 4 9      200000        0        0
POPULAR INC                    COM              733174106     1500  1000000 SH       DEFINED 1 2 3 4 9     1000000        0        0
PRECISION CASTPARTS CORP       COM              740189105     3109    20000 SH       DEFINED 1 2 3 4 9       20000        0        0
PRICELINE COM INC              COM NEW          741503403      746     1660 SH       DEFINED 1 2 3 4          1660        0        0
PRICELINE COM INC              COM NEW          741503403     4962    11040 SH       DEFINED 1 2 3 4 9       11040        0        0
PRIMORIS SVCS CORP             COM              74164F103      470    44923 SH       DEFINED 1 2 3 4         44923        0        0
QUANTA SVCS INC                COM              74762E102     1353    72000 SH       DEFINED 1 2 3 4 9       72000        0        0
RAILAMERICA INC                COM              750753402   395460 30350000 SH       DEFINED 1 2 3 4      30350000        0        0
ROCK-TENN CO                   CL A             772739207     1460    30000 SH       DEFINED 1 2 3 4 9       30000        0        0
SAKS INC                       COM              79377W108     1750   200000 SH  CALL DEFINED 1 2 3 4 9      200000        0        0
SCHWAB CHARLES CORP NEW        COM              808513105     2482   200000 SH  CALL DEFINED 1 2 3 4 9      200000        0        0
SIGNET JEWELERS LIMITED        SHS              G81276100     1039    30746 SH       DEFINED 1 2 3 4         30746        0        0
SIGNET JEWELERS LIMITED        SHS              G81276100     3640   107700 SH       DEFINED 1 2 3 4 9      107700        0        0
SLM CORP                       COM              78442P106     2534   200000 SH  CALL DEFINED 1 2 3 4 9      200000        0        0
SPANSION INC                   COM CL A NEW     84649R200     5231   443392 SH       DEFINED 1 2 3 4 6      443392        0        0
SPANSION INC                   COM CL A NEW     84649R200      342    28054 SH       DEFINED 1 2 3 4         28054        0        0
SPANSION INC                   COM CL A NEW     84649R200    11351   928880 SH       DEFINED 1 2 3          928880        0        0
SYNOVUS FINL CORP              COM              87161C105      321   300000 SH       DEFINED 1 2 3 4 9      300000        0        0
TEMPLE INLAND INC              COM              879868107    12040   500000 SH  CALL DEFINED 1 2 3 4 9      500000        0        0
TERADATA CORP DEL              COM              88076W103     1215    31100 SH  CALL DEFINED 1 2 3 4         31100        0        0
TERADATA CORP DEL              COM              88076W103     7173   183600 SH  CALL DEFINED 1 2 3 4 9      183600        0        0
TERADYNE INC                   COM              880770102    10861   606100 SH  CALL DEFINED 1 2 3 4 9      606100        0        0
TERADYNE INC                   COM              880770102     1846   103000 SH  CALL DEFINED 1 2 3 4        103000        0        0
TIBCO SOFTWARE INC             COM              88632Q103      609    27200 SH  CALL DEFINED 1 2 3 4         27200        0        0
TIBCO SOFTWARE INC             COM              88632Q103     3643   162700 SH  CALL DEFINED 1 2 3 4 9      162700        0        0
TIME WARNER CABLE INC          COM              88732J207      934    14897 SH       DEFINED 1 2 3 4         14897        0        0
TIME WARNER CABLE INC          COM              88732J207     8905   142103 SH       DEFINED 1 2 3 4 6      142103        0        0
TIMKEN CO                      COM              887389104     1510    46000 SH       DEFINED 1 2 3 4 9       46000        0        0
TRANSOCEAN LTD                 REG SHS          H8817H100     1165    24400 SH       DEFINED 1 2 3 4 9       24400        0        0
TRANSOCEAN LTD                 REG SHS          H8817H100      840    17600 SH       DEFINED 1 2 3 4         17600        0        0
TRANSOCEAN LTD                 REG SHS          H8817H100     2736    57300 SH       DEFINED 1 2 3 4 8       57300        0        0
TW TELECOM INC                 COM              87311L104     2481   150201 SH       DEFINED 1 2 3          150201        0        0
TYCO INTERNATIONAL LTD         SHS              H89128104     2893    71000 SH       DEFINED 1 2 3 4 9       71000        0        0
TYCO INTERNATIONAL LTD         SHS              H89128104      510    12500 SH  CALL DEFINED 1 2 3 4         12500        0        0
TYCO INTERNATIONAL LTD         SHS              H89128104     1935    47500 SH  CALL DEFINED 1 2 3 4 9       47500        0        0
UNION PAC CORP                 COM              907818108     2858    35000 SH       DEFINED 1 2 3 4 9       35000        0        0
WCA WASTE CORP                 COM              92926K103      257    60600 SH       DEFINED 1 2 3 4         60600        0        0
WESCO AIRCRAFT HLDGS INC       COM              950814103      125    11400 SH       DEFINED 1 2 3 4 9       11400        0        0
WESCO AIRCRAFT HLDGS INC       COM              950814103       39     3600 SH       DEFINED 1 2 3 4          3600        0        0
WILLBROS GROUP INC DEL         COM              969203108      189    45350 SH       DEFINED 1 2 3 4         45350        0        0
WYNN RESORTS LTD               COM              983134107     4580    39800 SH  PUT  DEFINED 1 2 3 4 9       39800        0        0
WYNN RESORTS LTD               COM              983134107      943     8200 SH  PUT  DEFINED 1 2 3 4          8200        0        0
YAHOO INC                      COM              984332106     1710   108100 SH  CALL DEFINED 1 2 3 4        108100        0        0
YAHOO INC                      COM              984332106    26112  1651600 SH  CALL DEFINED 1 2 3 4 9     1651600        0        0
YOUKU COM INC                  SPONSORED ADR    98742U100     3063    83200 SH  CALL DEFINED 1 2 3 4         83200        0        0
YOUKU COM INC                  SPONSORED ADR    98742U100    14754   400800 SH  CALL DEFINED 1 2 3 4 9      400800        0        0
ZIONS BANCORPORATION           COM              989701107     1126    80000 SH       DEFINED 1 2 3 4 9       80000        0        0