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:      Hudson Bay Capital Management LP
Address:   777 Third Ave, 30th Floor
           New York, New York 10017

Form 13F File Number:  028-12909

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:      Charles Winkler
Title:     Chief Operating Officer
Phone:     (212) 571-1244

Signature, Place, and Date of Signing:

          /s/ Charles Winkler             New York, NY            5/15/13
       ------------------------   --------------------------  ---------------
             [Signature]                  [City, State]            [Date]

Report Type (Check only one.):

[X]  13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager
     are reported in this report.)

[_]  13F NOTICE. (Check here if no holdings reported are in this report, and all
     holdings are reported by other reporting manager(s).)

[_]  13F COMBINATION REPORT. (Check here if a portion of the holdings for this
     reporting manager are reported in this report and a portion are reported by
     other reporting manager(s).)




                              Form 13F SUMMARY PAGE

Report Summary:

Number of Other Included Managers:                         0
                                               -------------

Form 13F Information Table Entry Total:                  146
                                               -------------

Form 13F Information Table Value Total:           $1,750,027
                                               -------------
                                                (thousands)

List of Other Included Managers:

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

NONE




                           FORM 13F INFORMATION TABLE



         COLUMN 1                 COLUMN 2     COLUMN 3  COLUMN 4       COLUMN 5        COLUMN 6  COLUMN 7       COLUMN 8
----------------------------- ---------------- --------- -------- -------------------- ---------- -------- ---------------------
                                                          VALUE     SHRS OR   SH/ PUT/ INVESTMENT  OTHER     VOTING AUTHORITY
       NAME OF ISSUER          TITLE OF CLASS   CUSIP    (x$1000)   PRN AMT   PRN CALL DISCRETION MANAGERS SOLE   SHARED    NONE
----------------------------- ---------------- --------- -------- ----------- --- ---- ---------- -------- ---- ----------- ----
                                                                                           
A H BELO CORP                 COM CL A         001282102    2,044     350,000 SH                           SOLE     350,000
ACACIA RESH CORP              PUT              003881957      543      18,000     PUT                      SOLE      18,000
ACE LTD                       SHS              H0023R105      680       7,639 SH                           SOLE       7,639
ACME PACKET INC               COM              004764106   13,984     478,573 SH                           SOLE     478,573
ALLSTATE CORP                 COM              020002101      840      17,119 SH                           SOLE      17,119
AMERICAN RLTY CAP PPTYS INC   COM              02917T104    1,908     129,971 SH                           SOLE     129,971
ANADARKO PETE CORP            COM              032511107    9,620     110,000 SH                           SOLE     110,000
ANADARKO PETE CORP            PUT              032511957   14,867     170,000     PUT                      SOLE     170,000
APPLE INC                     CALL             037833900   15,493      35,000     CALL                     SOLE      35,000
ARBITRON INC                  COM              03875Q108    4,741     101,156 SH                           SOLE     101,156
ARCH CAP GROUP LTD            ORD              G0450A105    1,046      19,905 SH                           SOLE      19,905
AXIS CAPITAL HOLDINGS INV     SHS              G0692U109      934      22,444 SH                           SOLE      22,444
BANK OF AMERICA CORPORATION   COM              060505104   36,540   3,000,000 SH                           SOLE   3,000,000
BANK OF AMERICA CORPORATION   *W EXP 01/16/201 060505146    5,246     920,339 SH                           SOLE     920,339
BANK OF AMERICA CORPORATION   CALL             060505904   58,699   4,819,300     CALL                     SOLE   4,819,300
BANK OF AMERICA CORPORATION   PUT              060505954  100,433   8,245,700     PUT                      SOLE   8,245,700
BARCLAYS BK PLC               IPATH S&P500 VIX 06740C188      507      25,000 PRN                          SOLE      25,000
BARNES & NOBLE INC            COM              067774109    1,314      79,900 SH                           SOLE      79,900
BERRY PETE CO                 PUT              085789955    2,004      43,300     PUT                      SOLE      43,300
BGS ACQUISITION CORP          SH               G1082J100      499      50,000 SH                           SOLE      50,000
BMC SOFTWARE INC              COM              055921100    5,560     120,000 SH                           SOLE     120,000
BMC SOFTWARE INC              CALL             055921900    9,266     200,000     CALL                     SOLE     200,000
CANON INC                     SPONSORED ADR    138006309    1,230      33,511 SH                           SOLE      33,511
CELSION CORPORATION           COM NEW          15117N305       12      11,100 SH                           SOLE      11,100
CEMEX SAB DE CV               NOTE 3.750% 3/1  151290BC6    9,478   7,000,000 PRN                          SOLE   7,000,000






                                                                                           
CEMEX SAB DE CV               PUT              151290959    3,797     311,000     PUT                      SOLE     311,000
CHESAPEAKE ENERGY CORP        NOTE 2.500% 5/1  165167CA3    7,203   7,585,000 PRN                          SOLE   7,585,000
CHINA PETE & CHEM CORP        SPON ADR H SHS   16941R108    2,715      23,220 SH                           SOLE      23,220
CHUBB CORP                    COM              171232101      710       8,115 SH                           SOLE       8,115
CITIZENS REPUBLIC BANCORP IN  COM NEW          174420307    7,611     337,524 SH                           SOLE     337,524
CME GROUP INC                 CALL             12572Q905   30,705     500,000     CALL                     SOLE     500,000
CNOOC LTD                     SPONSORED ADR    126132109    1,279       6,677 SH                           SOLE       6,677
COMMONWEALTH REIT             COM SH BEN INT   203233101    8,491     378,395 SH                           SOLE     378,395
CONSTELLATION BRANDS INC      CL A             21036P108   32,192     675,731 SH                           SOLE     675,731
CONSTELLATION BRANDS INC      CALL             21036P908  163,610   3,434,300     CALL                     SOLE   3,434,300
CONSTELLATION BRANDS INC      PUT              21036P958   76,939   1,615,000     PUT                      SOLE   1,615,000
COVENTRY HEALTH CARE INC      COM              222862104   35,090     746,113 SH                           SOLE     746,113
CVR ENERGY INC                COM              12662P108    1,409      27,297 SH                           SOLE      27,297
CYMER INC                     COM              232572107   13,264     138,020 SH                           SOLE     138,020
CYTORI THERAPEUTICS INC       COM              23283K105       40      15,978 SH                           SOLE      15,978
DELL INC                      CALL             24702R901   10,938     763,300     CALL                     SOLE     763,300
DIGITALGLOBE INC              COM NEW          25389M877    5,737     198,452 SH                           SOLE     198,452
DISCOVERY COMMUNICATNS NEW    COM SER C        25470F302   17,226     247,711 SH                           SOLE     247,711
DISH NETWORK CORP             CL A             25470M109   10,268     270,932 SH                           SOLE     270,932
DISH NETWORK CORP             CALL             25470M909    3,790     100,000     CALL                     SOLE     100,000
DOCUMENT SEC SYS INC          COM              25614T101    1,155     508,970 SH                           SOLE     508,970
DOLE FOOD CO INC NEW          COM              256603101    5,500     504,542 SH                           SOLE     504,542
DUFF & PHELPS CORP NEW        CL A             26433B107    2,001     129,005 SH                           SOLE     129,005
ENDO HEALTH SOLUTIONS INC     NOTE 1.750% 4/1  29264FAB2    9,561   8,000,000 PRN                          SOLE   8,000,000
ENZON PHARMACEUTICALS INC     COM              293904108      213      56,071 SH                           SOLE      56,071
EVEREST RE GROUP LTD          COM              G3223R108    1,033       7,952 SH                           SOLE       7,952
FIRST CALIFORNIA FINANCIAL G  COM NEW          319395109    9,279   1,089,080 SH                           SOLE   1,089,080
FOCUS MEDIA HLDG LTD          SPONSORED ADR    34415V109      861      32,109 SH                           SOLE      32,109
FOCUS MEDIA HLDG LTD          CALL             34415V909    6,995     260,900     CALL                     SOLE     260,900






                                                                                           
FREEPORT-MCMORAN COPPER & GO  CALL             35671D907   14,912     450,500     CALL                     SOLE     450,500
GARDNER DENVER INC            COM              365558105   20,693     275,500 SH                           SOLE     275,500
GENERAL MTRS CO               *W EXP 07/10/201 37045V118   40,042   2,163,278 SH                           SOLE   2,163,278
GENERAL MTRS CO               PUT              37045V950   13,484     484,700     PUT                      SOLE     484,700
GLEACHER & CO INC             COM              377341102    2,258   3,764,165 SH                           SOLE   3,764,165
GRAY TELEVISION INC           COM              389375106    1,086     231,600 SH                           SOLE     231,600
HANMI FINL CORP               COM NEW          410495204    2,253     140,829 SH                           SOLE     140,829
HARBINGER GROUP INC           COM              41146A106    2,326     281,555 SH                           SOLE     281,555
HARRIS TEETER SUPERMARKETS I  COM              414585109    5,375     125,845 SH                           SOLE     125,845
HARTFORD FINL SVCS GROUP INC  *W EXP 06/26/201 416515120    8,545     500,000 SH                           SOLE     500,000
HARVEST NATURAL RESOURCES IN  COM              41754V103      628     179,000 SH                           SOLE     179,000
HAWAIIAN TELCOM HOLDCO INC    COM              420031106    1,506      65,297 SH                           SOLE      65,297
HEINZ H J CO                  COM              423074103    2,082      28,803 SH                           SOLE      28,803
HEINZ H J CO                  CALL             423074903   13,825     191,300     CALL                     SOLE     191,300
HERTZ GLOBAL HOLDINGS INC     NOTE 5.250% 6/0  42805TAA3    2,714   1,000,000 PRN                          SOLE   1,000,000
HESS CORP                     COM              42809H107   22,753     317,741 SH                           SOLE     317,741
HONDA MOTOR LTD               AMERN SHS        438128308      574      15,000 SH                           SOLE      15,000
HUDSON CITY BANCORP           COM              443683107   33,936   3,927,812 SH                           SOLE   3,927,812
IDENIX PHARMACEUTICALS INC    COM              45166R204    1,371     385,056 SH                           SOLE     385,056
INTERDIGITAL INC              COM              45867G101      371       7,767 SH                           SOLE       7,767
INTERMEC INC                  COM              458786100    1,026     104,400 SH                           SOLE     104,400
ISHARES TR                    PUT              464288953   23,588     250,000     PUT                      SOLE     250,000
ISTAR FINL INC                NOTE 3.000%11/1  45031UBR1   38,251  32,500,000 PRN                          SOLE  32,500,000
KAYAK SOFTWARE CORP           CL A             486577109    4,758     119,075 SH                           SOLE     119,075
LAMAR ADVERTISING CO          CL A             512815101    1,400      28,800 SH                           SOLE      28,800
LAS VEGAS SANDS CORP          PUT              517834957    1,691      30,000     PUT                      SOLE      30,000
LEAP WIRELESS INTL INC        NOTE 4.500% 7/1  521863AL4    6,089   5,948,000 PRN                          SOLE   5,948,000
LIBERTY GLOBAL INC            COM SER A        530555101   12,971     176,717 SH                           SOLE     176,717
LIBERTY GLOBAL INC            PUT              530555951   14,680     200,000     PUT                      SOLE     200,000
LIBERTY MEDIA CORP            DEB 3.500% 1/1   530715AN1    9,315  17,584,000 PRN                          SOLE  17,584,000
LIBERTY MEDIA CORP DELAWARE   CL A             531229102   22,014     197,209 SH                           SOLE     197,209






                                                                                           
LIBERTY MEDIA CORP NEW        DEB 3.125% 3/3   530718AF2  144,665  88,749,000 PRN                          SOLE  88,749,000
LIFE TECHNOLOGIES CORP        COM              53217V109    5,345      82,700 SH                           SOLE      82,700
LINCOLN NATL CORP IND         *W EXP 07/10/201 534187117   34,023   1,464,602 SH                           SOLE   1,464,602
LOCAL CORP                    COM              53954W104      545     320,494 SH                           SOLE     320,494
MBIA INC                      CALL             55262C900    2,516     245,000     CALL                     SOLE     245,000
MCMORAN EXPLORATION CO        COM              582411104    4,550     278,300 SH                           SOLE     278,300
MCMORAN EXPLORATION CO        CALL             582411904    5,723     350,000     CALL                     SOLE     350,000
METROPCS COMMUNICATIONS INC   COM              591708102    9,613     881,953 SH                           SOLE     881,953
METROPCS COMMUNICATIONS INC   CALL             591708902   31,750   2,912,800     CALL                     SOLE   2,912,800
MGIC INVT CORP WIS            NOTE 5.000% 5/0  552848AD5   13,101  13,257,000 PRN                          SOLE  13,257,000
MGIC INVT CORP WIS            NOTE 2.000% 4/0  552848AE3   35,497  34,700,000 PRN                          SOLE  34,700,000
MOSAIC CO NEW                 COM              61945C103   11,326     190,000 SH                           SOLE     190,000
MOSAIC CO NEW                 PUT              61945C953    2,981      50,000     PUT                      SOLE      50,000
MPG OFFICE TR INC             COM              553274101    1,204     437,648 SH                           SOLE     437,648
NATIONAL FINL PARTNERS CORP   COM              63607P208    1,569      69,964 SH                           SOLE      69,964
NIDEC CORP                    SPONSORED ADR    654090109      552      36,800 SH                           SOLE      36,800
NYSE EURONEXT                 COM              629491101   13,899     359,698 SH                           SOLE     359,698
OFFICE DEPOT INC              COM              676220106    1,727     439,402 SH                           SOLE     439,402
OXYGEN BIOTHERAPEUTICS INC    COM NEW          69207P209       53     200,000 SH                           SOLE     200,000
PARTNERRE LTD                 COM              G6852T105    1,049      11,266 SH                           SOLE      11,266
PETROCHINA CO LTD             SPONSORED ADR    71646E100    1,490      11,301 SH                           SOLE      11,301
PHH CORP                      NOTE 6.000% 6/1  693320AQ6   47,053  24,500,000 PRN                          SOLE  24,500,000
PLAINS EXPL& PRODTN CO        COM              726505100    8,677     182,786 SH                           SOLE     182,786
QUICKLOGIC CORP               COM              74837P108       35      14,116 SH                           SOLE      14,116
RADIAN GROUP INC              NOTE 3.000%11/1  750236AK7  124,492 103,046,000 PRN                          SOLE 103,046,000
RDA MICROELECTRONICS INC      SPONSORED ADR    749394102      669      72,342 SH                           SOLE      72,342
RENAISSANCERE HOLDINGS LTD    COM              G7496G103      909       9,883 SH                           SOLE       9,883
RENTECH INC                   COM              760112102      306     130,111 SH                           SOLE     130,111
RITE AID CORP                 NOTE 8.500% 5/1  767754BU7    8,464   7,249,000 PRN                          SOLE   7,249,000
ROI ACQUISITION CORP          COM              74966A104    1,058     100,000 SH                           SOLE     100,000
SANOFI                        RIGHT 12/31/2020 80105N113      468     262,700 SH                           SOLE     262,700






                                                                                           
SAUER-DANFOSS INC             COM              804137107    2,479      42,424 SH                           SOLE      42,424
SAUER-DANFOSS INC             PUT              804137957    2,997      51,300     PUT                      SOLE      51,300
SCG FINL ACQUISITION CORP     COM              78404K103      649      65,000 SH                           SOLE      65,000
SCIENTIFIC GAMES CORP         CL A             80874P109    1,051     120,156 SH                           SOLE     120,156
SEALY CORP                    SR SECD 3RD 8%   812139400   12,907     168,763 PRN                          SOLE     168,763
SK TELECOM LTD                SPONSORED ADR    78440P108    2,683     150,138 SH                           SOLE     150,138
SPDR S&P 500 ETF TR           PUT              78462F953   31,310     200,000     PUT                      SOLE     200,000
SPRINT NEXTEL CORP            CALL             852061900   10,091   1,625,000     CALL                     SOLE   1,625,000
T3 MOTION INC                 *W EXP 05/13/201 89853X116        1     147,000 SH                           SOLE     147,000
T3 MOTION INC                 *W EXP 05/13/201 89853X124       22     146,000 SH                           SOLE     146,000
T3 MOTION INC                 COM NEW          89853X306       26     250,000 SH                           SOLE     250,000
TARGACEPT INC                 COM              87611R306      548     128,036 SH                           SOLE     128,036
THERMO FISHER SCIENTIFIC INC  COM              883556102    5,354      70,000 SH                           SOLE      70,000
TIVO INC                      COM              888706108    1,051      84,800 SH                           SOLE      84,800
TOWER GROUP INTL LTD          COM              G8988C105    3,967     215,000 SH                           SOLE     215,000
TOYOTA MOTOR CORP             SP ADR REP2COM   892331307      308       3,000 SH                           SOLE       3,000
TRANSWITCH CORP               COM NEW          894065309      495   1,021,067 SH                           SOLE   1,021,067
TRAVELERS COMPANIES INC       COM              89417E109      802       9,522 SH                           SOLE       9,522
TRUE RELIGION APPAREL INC     COM              89784N104    4,962     190,033 SH                           SOLE     190,033
VALIDUS HOLDINGS LTD          COM SHS          G9319H102      892      23,873 SH                           SOLE      23,873
VANGUARD INTL EQUITY INDEX F  MSCI EUROPE ETF  922042874    1,857      37,800 SH                           SOLE      37,800
VERIZON COMMUNICATIONS INC    COM              92343V104    5,991     121,900 SH                           SOLE     121,900
VIRGIN MEDIA INC              COM              92769L101   40,723     831,600 SH                           SOLE     831,600
VIVUS INC                     COM              928551100    2,267     206,110 SH                           SOLE     206,110
VRINGO INC                    COM              92911N104      158      49,800 SH                           SOLE      49,800
WPCS INTL INC                 COM NEW          92931L203      160     389,815 SH                           SOLE     389,815
XL GROUP PLC                  SHS              G98290102    1,034      34,140 SH                           SOLE      34,140
YRC WORLDWIDE INC             NOTE 10.000% 3/3 984249AB8      124     248,611 PRN                          SOLE     248,611
ZHONGPIN INC                  COM              98952K107    1,488     115,470 SH                           SOLE     115,470
ZHONGPIN INC                  PUT              98952K957    4,704     364,900     PUT                      SOLE     364,900