13F-HR 1 d389096d13fhr.txt 13F-HR ================================================================================ 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, 2012 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: DIAMONDBACK CAPITAL MANAGEMENT Address: ONE LANDMARK SQUARE STAMFORD, CT 06901 13 File Number: 28-11513 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: Timothy M. Higgins Title: Chief Financial Officer Phone: 203 399 1600 Signature, Place and Date of Signing: Stamford, CT August 14, 2012 Report Type (Check only one.): [X] 13F HOLDINGS REPORT. [ ] 13F NOTICE. [ ] 13F COMBINATION REPORT. I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITIES EXCHANGE ACT OF 1934 ================================================================================ FORM 13F SUMMARY PAGE Report Summary: ~~Number of Other Included Managers: 0 Form 13F Information Table Entry Total: 495 Form 13F Information Table Value Total: 2795358~~

ARTHROCARE CORP COM 043136100 3,921 133900 SH Sole 133900 ASSURED GUARANTY LTD COM G0585R106 10,249 726906 SH Sole 726906 AUTODESK INC COM 052769106 286 8171 SH Sole 8171 AUTOZONE INC COM 053332102 5,137 13992 SH Sole 13992 AUTOZONE INC COM 053332902 3,672 10000 SH CALL Sole 10000 AVON PRODS INC COM 054303102 359 22127 SH Sole 22127 BAKER HUGHES INC COM 057224107 674 16391 SH Sole 16391 BALL CORP COM 058498106 282 6880 SH Sole 6880 BANK OF NEW YORK MELLON CORP COM 064058100 228 10386 SH Sole 10386 BARCLAYS BK PLC IPTH S&P VIX 06740C261 6,948 456775 SH Sole 456775 NEW BARD C R INC COM 067383109 4,139 38522 SH Sole 38522 BARNES & NOBLE INC COM 067774109 11,121 675630 SH Sole 675630 BAXTER INTL INC COM 071813109 8,313 156414 SH Sole 156414 BAXTER INTL INC COM 071813909 5,315 100000 SH CALL Sole 100000 BED BATH & BEYOND INC COM 075896100 4,534 73358 SH Sole 73358 BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 8,331 99978 SH Sole 99978 BERRY PETE CO CL A 085789105 2,183 55039 SH Sole 55039 BEST BUY INC COM 086516101 1,081 51592 SH Sole 51592 BEST BUY INC COM 086516901 3,144 150000 SH CALL Sole 150000 BIOGEN IDEC INC COM 09062X103 6,643 46010 SH Sole 46010 BOEING CO COM 097023105 604 8125 SH Sole 8125 BOSTON SCIENTIFIC CORP COM 101137107 8,308 1465236 SH Sole 1465236 BRISTOL MYERS SQUIBB CO COM 110122108 12,050 335197 SH Sole 335197 BRISTOL MYERS SQUIBB CO COM 110122908 2,696 75000 SH CALL Sole 75000 BROADSOFT INC COM 11133B409 6,305 217724 SH Sole 217724 BROWN FORMAN CORP CL B 115637209 382 3942 SH Sole 3942 BUNGE LIMITED COM G16962105 410 6541 SH Sole 6541 C H ROBINSON WORLDWIDE INC COM NEW 12541W209 334 5710 SH Sole 5710 CALLIDUS SOFTWARE INC COM 13123E900 996 200000 SH CALL Sole 200000 CAMERON INTERNATIONAL CORP COM 13342B105 451 10549 SH Sole 10549 CAMPBELL SOUP CO COM 134429109 483 14482 SH Sole 14482 CAPITAL ONE FINL CORP COM 14040H105 15,539 284281 SH Sole 284281 CAPITAL SR LIVING CORP COM 140475104 4,388 414000 SH Sole 414000 CARMAX INC COM 143130102 229 8822 SH Sole 8822 CARPENTER TECHNOLOGY CORP COM 144285103 3,281 68592 SH Sole 68592 CARTER INC COM 146229109 10,689 203217 SH Sole 203217 CASH AMER INTL INC COM 14754D100 2,113 47969 SH Sole 47969 CATALYST HEALTH SOLUTIONS IN COM 14888B103 32,330 345996 SH Sole 345996 CATERPILLAR INC DEL COM 149123101 1,251 14732 SH Sole 14732 CBRE GROUP INC CL A 12504L109 263 16086 SH Sole 16086 CELGENE CORP COM 151020904 1,283 20000 SH CALL Sole 20000 CENTURYLINK INC COM 156700106 1,518 38445 SH Sole 38445 CERNER CORP COM 156782954 6,613 80000 SH PUT Sole 80000 CF INDS HLDGS INC COM 125269100 2,542 13123 SH Sole 13123 CHEESECAKE FACTORY INC COM 163072101 5,925 185379 SH Sole 185379 CHEVRON CORP NEW COM 166764100 6,870 65116 SH Sole 65116 CHICOS FAS INC COM 168615102 4,932 332322 SH Sole 332322 CHUBB CORP COM 171232101 693 9521 SH Sole 9521 CHURCH & DWIGHT INC COM 171340102 360 6499 SH Sole 6499 CIGNA CORPORATION COM 125509109 3,433 78031 SH Sole 78031 CISCO SYS INC COM 17275R102 1,768 102982 SH Sole 102982 CLEARWIRE CORP NEW CL A 18538Q105 3,049 2722500 SH Sole 2722500 CLOROX CO DEL COM 189054109 418 5766 SH Sole 5766

CME GROUP INC COM 12572Q105 643 2400 SH Sole 2400 COCA COLA ENTERPRISES INC NE COM 19122T109 405 14437 SH Sole 14437 COGNIZANT TECHNOLOGY SOLUTIO CL A 192446102 15,519 258644 SH Sole 258644 COINSTAR INC COM 19259P300 36,705 534597 SH Sole 534597 COLE KENNETH PRODTNS INC CL A 193294105 903 60000 SH Sole 60000 COLGATE PALMOLIVE CO COM 194162103 1,458 14006 SH Sole 14006 COLLECTIVE BRANDS INC COM 19421W100 2,198 102637 SH Sole 102637 COMCAST CORP NEW CL A 20030N101 355 11100 SH Sole 11100 COMMERCE BANCSHARES INC COM 200525103 3,819 100752 SH Sole 100752 COMMUNITY HEALTH SYS INC NEW COM 203668108 5,452 194519 SH Sole 194519 CONAGRA FOODS INC COM 205887102 13,020 502125 SH Sole 502125 CONCHO RES INC COM 20605P101 6,189 72710 SH Sole 72710 CONOCOPHILLIPS COM 20825C104 454 8129 SH Sole 8129 CONSTELLATION BRANDS INC CL A 21036P108 961 35500 SH Sole 35500 CONVERGYS CORP COM 212485106 512 34665 SH Sole 34665 COOPER INDUSTRIES PLC SHS G24140108 29,546 433346 SH Sole 433346 CORNING INC COM 219350105 553 42773 SH Sole 42773 CORRECTIONS CORP AMER NEW COM NEW 22025Y407 7,771 263885 SH Sole 263885 COSTCO WHSL CORP NEW COM 22160K105 11,294 118886 SH Sole 118886 CREDIT SUISSE GROUP SPONSORED ADR 225401108 491 26800 SH Sole 26800 CSX CORP COM 126408103 651 29114 SH Sole 29114 CUBIST PHARMACEUTICALS INC COM 229678107 10,312 272015 SH Sole 272015 CUMMINS INC COM 231021106 575 5929 SH Sole 5929 CVS CAREMARK CORPORATION COM 126650100 12,927 276627 SH Sole 276627 D R HORTON INC COM 23331A109 1,144 62231 SH Sole 62231 DANAHER CORP DEL COM 235851102 910 17476 SH Sole 17476 DAVITA INC COM 23918K108 5,049 51406 SH Sole 51406 DEERE & CO COM 244199105 833 10302 SH Sole 10302 DELL INC COM 24702R101 637 50902 SH Sole 50902 DEVON ENERGY CORP NEW COM 25179M103 202 3485 SH Sole 3485 DIAMOND OFFSHORE DRILLING IN COM 25271C102 2,160 36524 SH Sole 36524 DICKS SPORTING GOODS INC COM 253393102 3,364 70075 SH Sole 70075 DIGITAL GENERATION INC COM 25400B108 302 24402 SH Sole 24402 DIME CMNTY BANCSHARES COM 253922108 199 15000 SH Sole 15000 DIRECTV COM CL A 25490A101 201 4127 SH Sole 4127 DISCOVER FINL SVCS COM 254709108 15,702 454071 SH Sole 454071 DISNEY WALT CO COM DISNEY 254687106 1,707 35199 SH Sole 35199 DOLLAR GEN CORP NEW COM 256677105 17,580 323221 SH Sole 323221 DOMINOS PIZZA INC COM 25754A201 6,855 221764 SH Sole 221764 DOVER CORP COM 260003108 359 6703 SH Sole 6703 DOW CHEM CO COM 260543953 44 1400 SH PUT Sole 1400 DR PEPPER SNAPPLE GROUP INC COM 26138E109 412 9427 SH Sole 9427 DU PONT E I DE NEMOURS & CO COM 263534109 1,154 22827 SH Sole 22827 DYAX CORP COM 26746E103 1,757 825018 SH Sole 825018 DYNAVAX TECHNOLOGIES CORP COM 268158102 1,426 330000 SH Sole 330000 E M C CORP MASS COM 268648102 7,985 311537 SH Sole 311537 EAST WEST BANCORP INC COM 27579R104 2,468 105200 SH Sole 105200 EASTMAN CHEM CO COM 277432100 604 12000 SH Sole 12000 EASYLINK SERVICES INTL CORP CL A 277858106 2,472 341488 SH Sole 341488 EATON CORP COM 278058102 1,676 42300 SH Sole 42300 EBAY INC COM 278642103 326 7751 SH Sole 7751 EDAP TMS S A SPONSORED ADR 268311107 362 186400 SH Sole 186400 EDWARDS LIFESCIENCES CORP COM 28176E108 3,945 38190 SH Sole 38190 ELAN PLC ADR 284131908 2,918 200000 SH CALL Sole 200000

ELSTER GROUP SE SPONSORED ADR 290348101 5,481 270000 SH Sole 270000 EMBRAER S A SP ADR REP 4 29082A107 4,911 185100 SH Sole 185100 COM EMERSON ELEC CO COM 291011104 908 19498 SH Sole 19498 ENCORE BANCSHARES INC COM 29255V201 1,795 86991 SH Sole 86991 ENSCO PLC SHS CLASS A G3157S106 1,501 31955 SH Sole 31955 EOG RES INC COM 26875P101 1,860 20640 SH Sole 20640 EQUINIX INC COM NEW 29444U502 10,083 57402 SH Sole 57402 EVEREST RE GROUP LTD COM G3223R108 73,347 708734 SH Sole 708734 EXACT SCIENCES CORP COM 30063P105 4,314 402400 SH Sole 402400 EXACTECH INC COM 30064E109 1,052 62706 SH Sole 62706 EXELON CORP COM 30161N101 202 5381 SH Sole 5381 EXPEDITORS INTL WASH INC COM 302130109 300 7750 SH Sole 7750 EXPRESS SCRIPTS HLDG CO COM 30219G108 10,744 192435 SH Sole 192435 EXPRESS SCRIPTS HLDG CO COM 30219G958 2,792 50000 SH PUT Sole 50000 EXXON MOBIL CORP COM 30231G102 19,378 226458 SH Sole 226458 FACEBOOK INC CL A 30303M902 622 20000 SH CALL Sole 20000 FACEBOOK INC CL A 30303M952 311 10000 SH PUT Sole 10000 FASTENAL CO COM 311900104 396 9831 SH Sole 9831 FEDEX CORP COM 31428X106 805 8787 SH Sole 8787 FIFTH THIRD BANCORP COM 316773100 11,261 840345 SH Sole 840345 FIRST REP BK SAN FRANCISCO C COM 33616C100 3,657 108849 SH Sole 108849 FLOWSERVE CORP COM 34354P105 244 2125 SH Sole 2125 FLUIDIGM CORP DEL COM 34385P108 2,403 159800 SH Sole 159800 FOOT LOCKER INC COM 344849104 7,396 241862 SH Sole 241862 FORD MTR CO DEL COM PAR $0.01 345370860 1,245 129804 SH Sole 129804 FORD MTR CO DEL COM PAR $0.01 345370900 1,439 150000 SH CALL Sole 150000 FOREST LABS INC COM 345838106 15,536 444001 SH Sole 444001 FOSSIL INC COM 349882950 2,296 30000 SH PUT Sole 30000 FRANKLIN RES INC COM 354613101 16,170 145692 SH Sole 145692 FREEPORT-MCMORAN COPPER & GO COM 35671D857 6,396 187744 SH Sole 187744 FREEPORT-MCMORAN COPPER & GO COM 35671D907 1,704 50000 SH CALL Sole 50000 FRESH MKT INC COM 35804H106 7,774 144949 SH Sole 144949 FRONTIER COMMUNICATIONS CORP COM 35906A108 3,959 1033600 SH Sole 1033600 FULTON FINL CORP PA COM 360271100 3,372 337536 SH Sole 337536 FURIEX PHARMACEUTICALS INC COM 36106P101 1,131 54000 SH Sole 54000 FUSHI COPPERWELD INC COM 36113E957 999 115000 SH PUT Sole 115000 FUSION-IO INC COM 36112J907 679 32500 SH CALL Sole 32500 GAMESTOP CORP NEW CL A 36467W909 918 50000 SH CALL Sole 50000 GAP INC DEL COM 364760108 6,114 223476 SH Sole 223476 GENERAL ELECTRIC CO COM 369604103 847 40653 SH Sole 40653 GENERAL GROWTH PPTYS INC NEW COM 370023103 1,538 85000 SH Sole 85000 GENERAL MTRS CO COM 37045V100 2,659 134840 SH Sole 134840 GENERAL MTRS CO *W EXP 37045V126 157 23166 SH Sole 23166 07/10/201 GENERAL MTRS CO *W EXP 37045V118 255 23166 SH Sole 23166 07/10/201 GENON ENERGY INC COM 37244E107 23,183 13557533 SH Sole 13557533 GEN-PROBE INC NEW COM 36866T103 12,479 151807 SH Sole 151807 GILEAD SCIENCES INC COM 375558103 3,033 59144 SH Sole 59144 GIVEN IMAGING ORD SHS M52020100 5,309 336001 SH Sole 336001 GOLDCORP INC NEW COM 380956409 1,472 39163 SH Sole 39163 GOLDCORP INC NEW COM 380956909 11,274 300000 SH CALL Sole 300000 GOODRICH CORP COM 382388106 48,959 385808 SH Sole 385808

GOODRICH PETE CORP COM NEW 382410405 10,159 732964 SH Sole 732964 GOOGLE INC CL A 38259P508 2,553 4402 SH Sole 4402 GRAINGER W W INC COM 384802104 434 2269 SH Sole 2269 GREATBATCH INC COM 39153L106 4,358 191900 SH Sole 191900 GREENLIGHT CAPITAL RE LTD CLASS A G4095J109 13,636 536414 SH Sole 536414 GRIFOLS S A SPONSORED ADR 398438309 5,806 604800 SH Sole 604800 HALLIBURTON CO COM 406216101 2,870 101088 SH Sole 101088 HANCOCK HLDG CO COM 410120109 550 18053 SH Sole 18053 HARLEY DAVIDSON INC COM 412822108 353 7729 SH Sole 7729 HARRIS CORP DEL COM 413875105 229 5464 SH Sole 5464 HARTFORD FINL SVCS GROUP INC COM 416515104 347 19709 SH Sole 19709 HCA HOLDINGS INC COM 40412C101 7,033 231121 SH Sole 231121 HEARTWARE INTL INC COM 422368100 2,135 24042 SH Sole 24042 HERSHEY CO COM 427866108 13,433 186489 SH Sole 186489 HERTZ GLOBAL HOLDINGS INC COM 42805T105 3,512 274392 SH Sole 274392 HESS CORP COM 42809H107 24,913 573382 SH Sole 573382 HEWLETT PACKARD CO COM 428236103 940 46745 SH Sole 46745 HOLOGIC INC COM 436440101 10,738 595238 SH Sole 595238 HOME DEPOT INC COM 437076102 1,650 31131 SH Sole 31131 HONEYWELL INTL INC COM 438516106 5,955 106644 SH Sole 106644 HORMEL FOODS CORP COM 440452100 371 12209 SH Sole 12209 HOWARD HUGHES CORP COM 44267D107 408 6623 SH Sole 6623 HUDSON CITY BANCORP COM 443683107 564 88518 SH Sole 88518 HUMAN GENOME SCIENCES INC COM 444903108 2,632 200485 SH Sole 200485 HUMAN GENOME SCIENCES INC COM 444903958 657 50000 SH PUT Sole 50000 HUMANA INC COM 444859102 887 11451 SH Sole 11451 HUTCHINSON TECHNOLOGY INC NOTE 8.500% 448407AG1 7,653 10537000 PRN Sole 10537000 1/1 IDENIX PHARMACEUTICALS INC COM 45166R904 1,542 150000 SH CALL Sole 150000 IGNITE RESTAURANT GROUP INC COM 451730105 433 23900 SH Sole 23900 ILLUMINA INC COM 452327109 1,864 46153 SH Sole 46153 ILLUMINA INC COM 452327959 3,231 80000 SH PUT Sole 80000 INCYTE CORP COM 45337C102 3,400 149800 SH Sole 149800 INCYTE CORP NOTE 45337CAJ1 14,600 5500000 PRN Sole 5500000 4.750%10/0 INTEGRAMED AMER INC COM NEW 45810N302 12,535 905040 SH Sole 905040 INTERNATIONAL GAME TECHNOLOG COM 459902102 221 14005 SH Sole 14005 INTERXION HOLDING N.V SHS N47279109 539 29737 SH Sole 29737 INTUIT COM 461202103 508 8556 SH Sole 8556 INTUITIVE SURGICAL INC COM NEW 46120E602 4,763 8600 SH Sole 8600 IRIS INTL INC COM 46270W105 1,037 91782 SH Sole 91782 ISHARES TR FTSE CHINA25 464287184 2,215 65800 SH Sole 65800 IDX ISHARES TR MSCI EMERG 464287951 3,914 100000 SH PUT Sole 100000 MKT ISHARES TR RUSSELL 2000 464287955 15,930 200000 SH PUT Sole 200000 JACK IN THE BOX INC COM 466367109 1,798 64494 SH Sole 64494 JAMES RIVER COAL CO NOTE 470355AF5 4,525 11566000 PRN Sole 11566000 4.500%12/0 JETBLUE AIRWAYS CORP COM 477143101 83 15730 SH Sole 15730 JOHNSON & JOHNSON COM 478160104 27,301 404101 SH Sole 404101 JOHNSON & JOHNSON COM 478160904 20,268 300000 SH CALL Sole 300000 JOHNSON CTLS INC COM 478366107 547 19732 SH Sole 19732 JPMORGAN CHASE & CO COM 46625H100 34,109 954640 SH Sole 954640

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