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

                                    Form 13F

                              Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: March 31, 2013

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     May 13, 2013

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:    125

Form 13F Information Table Value Total:    $5,821,225 (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
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
ALKERMES PLC                   SHS              G01767105     1639    69100 SH       DEFINED 1 2 3 4 9       69100        0        0
ALKERMES PLC                   SHS              G01767105      595    25100 SH       DEFINED 1 2 3 4         25100        0        0
AMERICAN INTL GROUP INC        COM NEW          026874784   222972  5743726 SH       DEFINED 1 2 3 4       5743726        0        0
AMERICAN INTL GROUP INC        COM NEW          026874784    24368   627733 SH       DEFINED 1 2 3 4 6      627733        0        0
AMERICAN INTL GROUP INC        COM NEW          026874784     3750    96600 SH       DEFINED 1 2 3 4 9       96600        0        0
AMERICAN INTL GROUP INC        COM NEW          026874784     1864    48027 SH       DEFINED 2 2 3 4         48027        0        0
ANADARKO PETE CORP             COM              032511107     3454    39500 SH       DEFINED 1 2 3 4         39500        0        0
ANADARKO PETE CORP             COM              032511107     7040    80500 SH       DEFINED 1 2 3 4 9       80500        0        0
ANGLOGOLD ASHANTI LTD          SPONSORED ADR    035128206     2458   104334 SH       DEFINED 1 2 3          104334        0        0
APPLE INC                      COM              037833100     4560    10300 SH       DEFINED 1 2 3 4         10300        0        0
APPLE INC                      COM              037833100    20583    46500 SH       DEFINED 1 2 3 4 9       46500        0        0
BROOKDALE SR LIVING INC        COM              112463104   490516 17593826 SH       DEFINED 1 2 3 4      17593826        0        0
CHARTER COMMUNICATIONS INC D   CL A NEW         16117M305   520900     5000 SH       DEFINED 1 2 3            5000        0        0
CLEARWIRE CORP NEW             CL A             18538Q105      539   166358 SH       DEFINED 2 2 3 4        166358        0        0
CLEARWIRE CORP NEW             CL A             18538Q105     7629  2354642 SH       DEFINED 1 2 3 4 6     2354642        0        0
CLIFFS NAT RES INC             COM              18683K101      479    25200 SH       DEFINED 1 2 3 4 9       25200        0        0
CLIFFS NAT RES INC             COM              18683K101      191    10000 SH       DEFINED 1 2 3 4         10000        0        0
COMMONWEALTH REIT              COM SH BEN INT   203233101    11957   532847 SH       DEFINED 1 2 3 4 6      532847        0        0
COMMONWEALTH REIT              COM SH BEN INT   203233101      845    37653 SH       DEFINED 2 2 3 4         37653        0        0
COMVERSE INC                   COM              20585P105     2635       94 SH       DEFINED 1 2 3              94        0        0
COVANTA HLDG CORP              COM              22282E102     1974       98 SH       DEFINED 1 2 3              98        0        0
CREDIT SUISSE NASSAU BRH       INVRS VIX STERM  22542D795     1888    81000 SH       DEFINED 1 2 3 4 9       81000        0        0
CREDIT SUISSE NASSAU BRH       INVRS VIX STERM  22542D795     1202    51600 SH       DEFINED 1 2 3 4         51600        0        0
CYRUSONE INC                   COM              23283R100      372    16300 SH       DEFINED 1 2 3 4 6       16300        0        0
CYRUSONE INC                   COM              23283R100       27     1200 SH       DEFINED 2 2 3 4          1200        0        0
DELPHI AUTOMOTIVE PLC          SHS              G27823106      333     7500 SH       DEFINED 1 2 3 4          7500        0        0
DELPHI AUTOMOTIVE PLC          SHS              G27823106      519    11700 SH       DEFINED 1 2 3 4 9       11700        0        0
DELTA AIR LINES INC DEL        COM NEW          247361702     6838   414200 SH       DEFINED 1 2 3 4 9      414200        0        0
DEX ONE CORP                   COM              25212W100    99826    58378 SH       DEFINED 1 2 3           58378        0        0
DIAMOND OFFSHORE DRILLING IN   COM              25271C102     2155    30975 SH       DEFINED 1 2 3 4         30975        0        0
DISNEY WALT CO                 COM DISNEY       254687106     1437    25300 SH       DEFINED 1 2 3 4         25300        0        0
DISNEY WALT CO                 COM DISNEY       254687106     6885   121200 SH       DEFINED 1 2 3 4 9      121200        0        0
DORCHESTER MINERALS LP         COM UNIT         25820R105    97440     4200 SH       DEFINED 1 2 3            4200        0        0
EATON CORP PLC                 SHS              G29183103      918    15000 SH       DEFINED 1 2 3 4         15000        0        0
EATON CORP PLC                 SHS              G29183103     6746   110140 SH       DEFINED 1 2 3 4 9      110140        0        0
EBAY INC                       COM              278642103     3698    68200 SH       DEFINED 1 2 3 4         68200        0        0
EBAY INC                       COM              278642103     9234   170300 SH       DEFINED 1 2 3 4 9      170300        0        0
F5 NETWORKS INC                COM              315616102      606     6800 SH  PUT  DEFINED 1 2 3 4          6800        0        0
F5 NETWORKS INC                COM              315616102     3848    43200 SH  PUT  DEFINED 1 2 3 4 9       43200        0        0
FOREST LABS INC                COM              345838106     1601    42100 SH       DEFINED 1 2 3 4         42100        0        0
FOREST LABS INC                COM              345838106     4409   115900 SH       DEFINED 1 2 3 4 9      115900        0        0
GENERAL DYNAMICS CORP          COM              369550108      332     4700 SH       DEFINED 1 2 3 4          4700        0        0
GENERAL DYNAMICS CORP          COM              369550108    13171   186800 SH       DEFINED 1 2 3 4 9      186800        0        0
GENERAL GROWTH PPTYS INC NEW   COM              370023103      639    32160 SH       DEFINED 1 2 3 4         32160        0        0
GENERAL MTRS CO                COM              37045V100   375291    13490 SH       DEFINED 1 2 3           13490        0        0
GOLAR LNG PARTNERS LP          COM UNIT LPI     Y2745C102    13684   414682 SH       DEFINED 1 2 3 4 6      414682        0        0
GOLAR LNG PARTNERS LP          COM UNIT LPI     Y2745C102     1052    31884 SH       DEFINED 2 2 3 4         31884        0        0
GOLD FIELDS LTD NEW            SPONSORED ADR    38059T106     1566   202000 SH       DEFINED 1 2 3          202000        0        0
GOOGLE INC                     CL A             38259P508      754      950 SH       DEFINED 1 2 3 4           950        0        0
GOOGLE INC                     CL A             38259P508     3334     4200 SH       DEFINED 1 2 3 4 9        4200        0        0
HOWARD HUGHES CORP             COM              44267D107      258     3081 SH       DEFINED 1 2 3 4          3081        0        0
INGERSOLL-RAND PLC             SHS              G47791101      963    17500 SH       DEFINED 1 2 3 4         17500        0        0
INGERSOLL-RAND PLC             SHS              G47791101    16999   309000 SH       DEFINED 1 2 3 4 9      309000        0        0
INTL PAPER CO                  COM              460146103    14533   312000 SH       DEFINED 1 2 3 4 9      312000        0        0
ISHARES TR                     HIGH YLD CORP    464288513     1500    15900 SH  PUT  DEFINED 1 2 3 4         15900        0        0
ISHARES TR                     MSCI EMERG MKT   464287234     1356    31700 SH  PUT  DEFINED 1 2 3 4         31700        0        0
ISHARES TR                     MSCI EMERG MKT   464287234     8697   203300 SH  PUT  DEFINED 1 2 3 4 9      203300        0        0
ISHARES TR                     RUSSELL 2000     464287655     1273    13500 SH  PUT  DEFINED 1 2 3 4         13500        0        0
ISHARES TR                     RUSSELL 2000     464287655     8153    86500 SH  PUT  DEFINED 1 2 3 4 9       86500        0        0
ISTAR FINL INC                 COM              45031U101     1099   100862 SH       DEFINED 1 2 3 4 6      100862        0        0
ISTAR FINL INC                 COM              45031U101      138    12680 SH       DEFINED 2 2 3 4         12680        0        0
JOHNSON CTLS INC               COM              478366107     4033   115000 SH       DEFINED 1 2 3 4 9      115000        0        0
MANITOWOC INC                  COM              563571108     1974    96000 SH       DEFINED 1 2 3 4 9       96000        0        0
MARKET VECTORS ETF TR          GOLD MINER ETF   57060U100    10977   290000 SH  CALL DEFINED 1 2 3          290000        0        0
MARKET VECTORS ETF TR          SEMICONDUCTOR    57060U233     1439    40500 SH  PUT  DEFINED 1 2 3 4         40500        0        0
MARKET VECTORS ETF TR          SEMICONDUCTOR    57060U233     9220   259500 SH  PUT  DEFINED 1 2 3 4 9      259500        0        0
METROPCS COMMUNICATIONS INC    COM              591708102   184166    16896 SH       DEFINED 1 2 3           16896        0        0
MICHAEL KORS HLDGS LTD         SHS              G60754101     3657    64397 SH       DEFINED 1 2 3 4         64397        0        0
MICHAEL KORS HLDGS LTD         SHS              G60754101    15111   266091 SH       DEFINED 1 2 3 4 9      266091        0        0
MOHAWK INDS INC                COM              608190104     9106    80500 SH       DEFINED 1 2 3 4 9       80500        0        0
NATIONSTAR MTG HLDGS INC       COM              63861C109  2503639 67849307 SH       DEFINED 1 2 3 4      67849307        0        0
NEW ORIENTAL ED & TECH GRP I   SPON ADR         647581107      857    47600 SH       DEFINED 1 2 3 4 9       47600        0        0
NEWCASTLE INVT CORP            COM              65105M108    11460  1025729 SH       DEFINED 1             1025729        0        0
NEWCASTLE INVT CORP            COM              65105M108     2140   191600 SH       DEFINED 1 2 3          191600        0        0
NRG ENERGY INC                 COM NEW          629377508       79        3 SH       DEFINED 1 2 3               3        0        0
PENN NATL GAMING INC           COM              707569109     8591   157823 SH       DEFINED 1 2 3 4        157823        0        0
QUALCOMM INC                   COM              747525103     9044   135083 SH       DEFINED 1 2 3 4        135083        0        0
QUALCOMM INC                   COM              747525103    25753   384650 SH       DEFINED 1 2 3 4 9      384650        0        0
ROUSE PPTYS INC                COM              779287101       22     1206 SH       DEFINED 1 2 3 4          1206        0        0
SALIX PHARMACEUTICALS INC      COM              795435106      558    10900 SH       DEFINED 1 2 3 4         10900        0        0
SALIX PHARMACEUTICALS INC      COM              795435106     1541    30100 SH       DEFINED 1 2 3 4 9       30100        0        0
SANDISK CORP                   COM              80004C101     1939    35250 SH       DEFINED 1 2 3 4         35250        0        0
SANDISK CORP                   COM              80004C101     6191   112550 SH       DEFINED 1 2 3 4 9      112550        0        0
SBA COMMUNICATIONS CORP        COM              78388J106     1059    14700 SH       DEFINED 1 2 3 4         14700        0        0
SBA COMMUNICATIONS CORP        COM              78388J106     6777    94100 SH       DEFINED 1 2 3 4 9       94100        0        0
SEACUBE CONTAINER LEASING LT   SHS              G79978105   192637  8390119 SH       DEFINED 1 2 3 4       8390119        0        0
SEADRILL PARTNERS LLC          COMUNIT REP LB   Y7545W109     1211    43650 SH       DEFINED 1 2 3 4 6       43650        0        0
SEADRILL PARTNERS LLC          COMUNIT REP LB   Y7545W109       93     3357 SH       DEFINED 2 2 3 4          3357        0        0
SELECT SECTOR SPDR TR          SBI CONS STPLS   81369Y308     4155   104500 SH       DEFINED 1 2 3 4        104500        0        0
SELECT SECTOR SPDR TR          SBI CONS STPLS   81369Y308     6530   164200 SH       DEFINED 1 2 3 4 9      164200        0        0
SELECT SECTOR SPDR TR          SBI INT-INDS     81369Y704     4874   116800 SH  PUT  DEFINED 1 2 3 4        116800        0        0
SELECT SECTOR SPDR TR          SBI INT-INDS     81369Y704     7645   183200 SH  PUT  DEFINED 1 2 3 4 9      183200        0        0
SELECT SECTOR SPDR TR          SBI INT-INDS     81369Y704    20473   490600 SH       DEFINED 1 2 3 4        490600        0        0
SELECT SECTOR SPDR TR          SBI INT-INDS     81369Y704    31272   749400 SH       DEFINED 1 2 3 4 9      749400        0        0
SIBANYE GOLD LTD               SPONSORED ADR    825724206      286    50500 SH       DEFINED 1 2 3           50500        0        0
SINA CORP                      ORD              G81477104     2580    53100 SH  PUT  DEFINED 1 2 3 4         53100        0        0
SINA CORP                      ORD              G81477104     9568   196900 SH  PUT  DEFINED 1 2 3 4 9      196900        0        0
SINA CORP                      ORD              G81477104    15870   326600 SH  CALL DEFINED 1 2 3 4 9      326600        0        0
SINA CORP                      ORD              G81477104     3567    73400 SH  CALL DEFINED 1 2 3 4         73400        0        0
SINA CORP                      ORD              G81477104    10044   206722 SH       DEFINED 1 2 3 4 9      206722        0        0
SINA CORP                      ORD              G81477104     2687    55291 SH       DEFINED 1 2 3 4         55291        0        0
SPANSION INC                   COM CL A NEW     84649R200     6049   470000 SH       DEFINED 1 2 3          470000        0        0
SPDR GOLD TRUST                GOLD SHS         78463V107    44024   285000 SH  CALL DEFINED 1 2 3          285000        0        0
SPDR S&P 500 ETF TR            TR UNIT          78462F103   292473  1868000 SH  PUT  DEFINED 1 2 3 4 6     1868000        0        0
SPDR S&P 500 ETF TR            TR UNIT          78462F103    20667   132000 SH  PUT  DEFINED 2 2 3 4        132000        0        0
SPDR SERIES TRUST              S&P RETAIL ETF   78464A714     4023    57200 SH  PUT  DEFINED 1 2 3 4         57200        0        0
SPDR SERIES TRUST              S&P RETAIL ETF   78464A714     6317    89800 SH  PUT  DEFINED 1 2 3 4 9       89800        0        0
SPREADTRUM COMMUNICATIONS IN   ADR              849415203      820    39999 SH       DEFINED 1 2 3 4         39999        0        0
SPREADTRUM COMMUNICATIONS IN   ADR              849415203     3260   159001 SH       DEFINED 1 2 3 4 9      159001        0        0
STARBUCKS CORP                 COM              855244109     2409    42300 SH       DEFINED 1 2 3 4         42300        0        0
STARBUCKS CORP                 COM              855244109    10173   178598 SH       DEFINED 1 2 3 4 9      178598        0        0
SUPERMEDIA INC                 COM              868447103     7755     2004 SH       DEFINED 1 2 3            2004        0        0
TIME WARNER INC                COM NEW          887317303     1308    22700 SH       DEFINED 1 2 3 4         22700        0        0
TIME WARNER INC                COM NEW          887317303     6113   106100 SH       DEFINED 1 2 3 4 9      106100        0        0
UNITED RENTALS INC             COM              911363109     6926   126000 SH       DEFINED 1 2 3 4 9      126000        0        0
UNITED RENTALS INC             COM              911363109      968    17600 SH       DEFINED 1 2 3 4         17600        0        0
VERINT SYS INC                 COM              92343X100     4459      122 SH       DEFINED 1 2 3             122        0        0
VIACOM INC NEW                 CL B             92553P201     6780   110100 SH       DEFINED 1 2 3 4 9      110100        0        0
VIACOM INC NEW                 CL B             92553P201     1515    24600 SH       DEFINED 1 2 3 4         24600        0        0
WALKER & DUNLOP INC            COM              93148P102   104651  5823628 SH       DEFINED 1 2 3 4       5823628        0        0
WALKER & DUNLOP INC            COM              93148P102   104651  5823627 SH       DEFINED 2 2 3 4       5823627        0        0
WESCO INTL INC                 COM              95082P105     6027    83000 SH       DEFINED 1 2 3 4 9       83000        0        0
WHIRLPOOL CORP                 COM              963320106      332     2800 SH       DEFINED 1 2 3 4          2800        0        0
WHIRLPOOL CORP                 COM              963320106      533     4500 SH       DEFINED 1 2 3 4 9        4500        0        0
WILLBROS GROUP INC DEL         COM              969203108      445    45350 SH       DEFINED 1 2 3 4         45350        0        0