13F-HR 1 d13fhr.txt FORM 13F UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 13F HR FORM 13F Cover Page Report for the Calendar Year or Quarter Ended: June 30, 2006 If amended report check here: [ ] Amendment Number: This Amendment (check only one): [ ] is a restatement [ ] adds new holding entries Seneca Capital Advisors LLC Name of Institutional Investment Manager 590 Madison Avenue New York New York 10022 ------------------------------------------------------------------- Business Address (Street) (City) (State) (Zip) 13F File Number: 28-03497 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 herein is true, correct and complete, and that it is understood that all required items, statements, schedules, and tables, are considered integral parts of this form. Name, Title and Telephone Number of Person Submitting Report: Michael Anastasio Chief Financial Officer 212-888-2999 --------------------------------------------------------------------------- (Name) (Title) (Phone) Signature, Place and Date of Signing: /s/ Michael Anastasio ----------------------------- 590 Madison Avenue New York, New York 10022 8/14/2006 Report Type: [X] 13F HOLDINGS REPORT. [ ] 13F NOTICE. [ ] 13F COMBINATION REPORT. FORM 13F SUMMARY PAGE Number of Other Included Managers: 1 List of Other Included Managers: Seneca Capital Investments LP Form 13F Information Table Entry Total:227 Form 13F Information Table Value Total: 2,806,649,000 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON D.C. 20549 FORM 13F INFORMATION TABLE SENECA CAPITAL ADVISORS LLC FORM 13F INFORMATION TABLE AS OF DATE 06/30/06

BOSTON SCIENTIFIC CORP COM 101137107 4,858 288,500 SH CALL SOLE 288,500 CMS ENERGY CORP COM 125296100 27,764 2,145,620 SH SOLE 1 2,145,620 CMS ENERGY CORP COM 125896100 16,175 1,249,980 SH SOLE 1,249,980 CARMIKE CINEMAS INC COM 143436400 1,984 94,100 SH SOLE 1 94,100 CARMIKE CINEMAS INC COM 143436400 1,155 54,800 SH SOLE 54,800 CELANESE CORP DEL COM SER A 150870103 5,162 252,800 SH SOLE 1 252,800 CELANESE CORP DEL COM SER A 150870103 3,006 147,200 SH SOLE 147,200 CENDANT CORP COM 151313103 15,958 979,600 SH SOLE 1 979,600 CENDANT CORP COM 151313103 9,292 570,400 SH SOLE 570,400 CHARTER COMMUNICATIONS INC CL A 16117M107 549 486,200 SH SOLE 1 486,200 CHARTER COMMUNICATIONS INC CL A 16117M107 299 264,400 SH SOLE 264,400 CHENIERE ENERGY INC COM NEW 16411R208 61,558 1,578,400 SH SOLE 1 1,578,400 CHENIERE ENERGY INC COM NEW 16411R208 26,469 678,700 SH SOLE 678,700 CITIGROUP INC COM 172967101 18,384 381,100 SH SOLE 1 381,100 CITIGROUP INC COM 172967101 10,704 221,900 SH SOLE 221,900 CONOCOPHILIPS COM 20825C104 28,990 442,400 SH SOLE 1 442,400 CONOCOPHILIPS COM 20825C104 16,881 257,600 SH SOLE 257,600 COURTSIDE ACQUISITION CORP UNIT 99/99/9999 22274N201 2,208 350,400 SH SOLE 1 350,400 COURTSIDE ACQUISITION CORP UNIT 99/99/9999 22274N201 1,257 199,600 SH SOLE 199,600 COVANTA HOLDING CORP COM 22282E102 4,873 276,072 SH SOLE 1 276,072 COVANTA HOLDING CORP COM 22282E102 2,799 158,598 SH SOLE 158,598 DENNYS CORP COM 24869P104 2,510 680,200 SH SOLE 1 680,200 DENNYS CORP COM 24869P104 1,458 395,100 SH SOLE 395,100 DEUTSCHE SPONSORED TELEKOM AG ADR 251566105 6,931 432,120 SH SOLE 432,120 DEVON ENERGY CORP NEW COM 25179M103 11,454 189,600 SH PUT SOLE 1 189,600 DEVON ENERGY CORP NEW COM 25179M103 6,669 110,400 SH PUT SOLE 110,400 EMBARQ CORP COM 29078E105 2,591 63,200 SH SOLE 1 63,200 EMBARQ CORP COM 29078E105 1,508 36,800 SH SOLE 36,800 ENDEAVOR ACQUISITION CORP UNIT 99/99/9999 292577202 4,591 546,500 SH SOLE 1 546,500 ENDEAVOR ACQUISITION CORP UNIT 99/99/9999 292577202 2,549 303,500 SH SOLE 303,500 FALCONBRIDGE LTD COM 306104100 32,871 623,800 SH SOLE 1 623,800 FALCONBRIDGE LTD COM 306104100 19,139 363,200 SH SOLE 363,200 FEDERATED DEPT STORES INC DE COM 31410H101 14,883 406,640 SH SOLE 1 406,640 FEDERATED DEPT STORES INC DE COM 31410H101 8,665 236,760 SH SOLE 236,760 FEDERATED DEPT STORES INC DE COM 31410H101 11,719 320,200 SH CALL SOLE 1 320,200 FEDERATED DEPT STORES INC DE COM 31410H101 6,581 179,800 SH CALL SOLE 179,800 FIRST NETWORKS INC COM 31865X106 1,945 178,800 SH SOLE 1 178,800 FIRST NETWORKS INC COM 31865X106 1,102 101,300 SH SOLE 101,300 FISHER SCIENTIFIC INC COM NEW 338032204 6,041 82,700 SH SOLE 1 82,700 FISHER SCIENTIFIC INC COM NEW 338032204 3,455 47,300 SH SOLE 47,300 FNX MINING COM 30253R101 2,049 215,700 SH SOLE 1 215,700 FNX MINING COM 30253R101 1,152 121,300 SH SOLE 121,300 FOOT LOCKER INC COM 344849104 31,634 1,291,700 SH SOLE 1 1,291,700 FOOT LOCKER INC COM 344849104 18,840 769,300 SH SOLE 769,300 FOOT LOCKER INC COM 344849104 6,274 256,200 SH CALL SOLE 1 256,200 FOOT LOCKER INC COM 344849104 3,522 143,800 SH CALL SOLE 143,800 FREESCALE SEMICONDUCTOR INC COM CL A 35687M107 80,865 2,788,450 SH SOLE 1 2,788,450 FREESCALE SEMICONDUCTOR INC COM CL A 35687M107 34,635 1,194,300 SH SOLE 1,194,300 FREESCALE SEMICONDUCTOR INC CL B 35687M206 40,741 1,385,750 SH SOLE 1 1,385,750 FREESCALE SEMICONDUCTOR INC CL B 35687M206 23,476 798,500 SH SOLE 798,500 FRONTIER OIL CORP COM 35914P105 5,116 157,900 SH SOLE 1 157,900 FRONTIER OIL CORP COM 35914P105 2,991 92,300 SH SOLE 92,300 GLOBAL LOGISTICS ACQUISITION UNIT 99/99/9999 379414204 1,944 240,300 SH SOLE 1 240,300

GLOBAL LOGISTICS ACQUISITION UNIT 99/99/9999 379414204 1,090 134,700 SH SOLE 134,700 GRUBB & ELLIS REALTY ADVISORS INC UNIT 99/99/9999 400096202 2,054 320,500 SH SOLE 1 320,500 GRUBB & ELLIS REALTY ADVISORS INC UNIT 99/99/9999 400096202 1,151 179,500 SH SOLE 179,500 GRUPO AEROPORTUARIO DEL PAC SPON ADR B 400506101 28,671 900,200 SH SOLE 1 900,200 GRUPO AEROPORTUARIO DEL PAC SPON ADR B 400506101 16,693 524,100 SH SOLE 524,100 HD PARTNERS ACQUISITION UNIT 99/99/9999 40415K209 1,736 221,200 SH SOLE 1 221,200 HD PARTNERS ACQUISITION UNIT 99/99/9999 40415K209 1,011 128,800 SH SOLE 128,800 HSBC HLDGS PLC SPONSORED ADR NEW 404280406 244 2,760 SH SOLE 2,760 HOME DEPOT INC COM 437076102 11,460 320,200 SH SOLE 1 320,200 HOME DEPOT INC COM 437076102 6,435 179,800 SH SOLE 179,800 HOSPIRA INC COM 441060100 13,380 311,600 SH SOLE 1 311,600 HOSPIRA INC COM 441060100 7,768 180,900 SH SOLE 180,900 INDIA GLOBALIZATION CAP INC UNIT 99/99/9999 45408X209 2,250 351,500 SH SOLE 1 351,500 INDIA GLOBALIZATION CAP INC UNIT 99/99/9999 45408X209 1,270 198,500 SH SOLE 198,500 INTEL CORP COM 458140100 15,610 821,600 SH SOLE 1 821,600 INTEL CORP COM 458140100 9,090 478,400 SH SOLE 478,400 IPSCO INC COM 462622101 1,608 16,800 SH SOLE 1 16,800 IPSCO INC COM 462622101 919 9,600 SH SOLE 9,600 ISHARES TR RUSSELL 2000 464287655 385,377 5,372,600 SH PUT SOLE 1 5,372,600 ISHARES TR RUSSELL 2000 464287655 224,235 3,126,100 SH PUT SOLE 3,126,100 KB HOME COM 48666K109 6,685 145,800 SH SOLE 1 145,800 KB HOME COM 48666K109 4,778 104,200 SH SOLE 104,200 LAIDLAW INT'L INC COM 50730R102 4,556 180,800 SH SOLE 1 180,800 LAIDLAW INT'L INC COM 50730R102 2,654 105,300 SH SOLE 105,300 LENNAR CORP CL A 526057104 4,914 110,740 SH SOLE 1 110,740 LENNAR CORP CL A 526057104 2,865 64,560 SH SOLE 64,560 LIGAND PHARMACEUTICALS INC CL B 53220K207 2,357 278,990 SH SOLE 1 278,990 LIGAND PHARMACEUTICALS INC CL B 53220K207 4,183 495,010 SH SOLE 495,010 MDC HLDGS INC COM 552676108 13,121 252,670 SH SOLE 1 252,670 MDC HLDGS INC COM 552676108 7,640 147,130 SH SOLE 147,130 MTR GAMING GROUP COM 553769100 560 59,700 SH SOLE 1 59,700 MTR GAMING GROUP COM 553769100 314 33,500 SH SOLE 33,500 MICHAELS STORES INC COM 594087108 38,229 927,000 SH SOLE 1 927,000 MICHAELS STORES INC COM 594087108 22,249 539,500 SH SOLE 539,500 MICHAELS STORES INC COM 594087108 19,721 478,200 SH CALL SOLE 1 478,200 MICHAELS STORES INC COM 594087108 11,209 271,800 SH CALL SOLE 271,800 MICROSOFT CORP COM 594918104 45,647 1,959,100 SH SOLE 1 1,959,100 MICROSOFT CORP COM 594918104 26,583 1,140,900 SH SOLE 1,140,900 MICROSOFT CORP COM 594918104 22,384 960,700 SH CALL SOLE 1 960,700 MICROSOFT CORP COM 594918104 12,566 539,300 SH CALL SOLE 539,300 MOLEX INC CL A 608554200 3,002 104,500 SH SOLE 104,500 MUELLER WATER PRODS INC COM SER A 624758108 7,702 442,400 SH SOLE 1 442,400 MUELLER WATER PRODS INC COM SER A 624758108 4,485 257,600 SH SOLE 257,600 NRG ENERGY INC COM NEW 629377508 47,216 980,000 SH SOLE 1 980,000 NRG ENERGY INC COM NEW 629377508 21,879 454,100 SH SOLE 454,100 NRG ENERGY INC COM NEW 629377508 10,913 226,500 SH CALL SOLE 1 226,500 NRG ENERGY INC COM NEW 629377508 6,360 132,000 SH CALL SOLE 132,000 NATIONSHEALTH INC UNIT 08/24/2007 63860C209 60 16,000 SH SOLE 1 16,000 NATIONSHEALTH INC W EXP 08/24/07 63860C118 28 64,000 SH SOLE 1 64,000 NATIONSHEALTH INC W EXP 08/24/07 63860C118 15 36,000 SH SOLE 36,000 NATURAL RESOURCE PARTNERS LP COM UNIT L P 63900P103 3,360 62,000 SH SOLE 62,000 O CHARLEYS INC COM 670823103 4,656 273,900 SH SOLE 1 273,900 O CHARLEYS INC COM 670823103 2,712 159,500 SH SOLE 159,500

OCCIDENTAL PETE CORP DEL COM 674599105 32,406 316,000 SH PUT SOLE 1 316,000 OCCIDENTAL PETE CORP DEL COM 674599105 18,869 184,000 SH PUT SOLE 184,000 PHARMACOPEIA DRUG DISCVRY IN COM 7171EP101 1,518 379,600 SH SOLE 1 379,600 PHARMACOPEIA DRUG DISCVRY IN COM 7171EP101 884 221,000 SH SOLE 221,000 PHELPS DODGE CORP COM 717265102 18,174 221,200 SH SOLE 1 221,200 PHELPS DODGE CORP COM 717265102 10,582 128,800 SH SOLE 128,800 PROCTER & GAMBLE CO COM 742718109 27,344 491,800 SH SOLE 1 491,800 PROCTER & GAMBLE CO COM 742718109 16,624 299,000 SH SOLE 299,000 PROCTER & GAMBLE CO COM 742718109 81,987 1,474,587 SH CALL SOLE 1 1,474,587 PROCTER & GAMBLE CO COM 742718109 47,283 850,413 SH CALL SOLE 850,413 PULTE HOMES INC COM 745867101 567 19,700 SH SOLE 1 19,700 PULTE HOMES INC COM 745867101 291 10,100 SH SOLE 10,100 PULTE HOMES INC COM 745867101 4,627 160,700 SH CALL SOLE 1 160,700 PULTE HOMES INC COM 745867101 2,571 89,300 SH CALL SOLE 89,300 QSGI INC COM 74729D106 835 521,800 SH SOLE 1 521,800 QSGI INC COM 74729D106 466 291,100 SH SOLE 291,100 RADIOSHACK CORP COM 750438103 2,692 192,300 SH CALL SOLE 1 192,300 RADIOSHACK CORP COM 750438103 1,508 107,700 SH CALL SOLE 107,700 RAM ENERGY RESOURCES INC COM 75130P109 1,390 243,000 SH SOLE 1 243,000 RAM ENERGY RESOURCES INC COM 75130P109 784 137,000 SH SOLE 137,000 RAM ENERGY RESOURCES INC W EXP 99/99/9999 75130P117 532 326,200 SH SOLE 1 326,200 RAM ENERGY RESOURCES INC W EXP 99/99/9999 75130P117 300 183,800 SH SOLE 183,800 RELIANT ENERGY INC COM 75952B105 55,691 4,648,700 SH SOLE 1 4,648,700 RELIANT ENERGY INC COM 75952B105 63,120 5,268,800 SH SOLE 5,268,800 RUSSEL CORP COM 782352108 14,884 819,580 SH SOLE 1 819,580 RUSSEL CORP COM 782353108 8,666 477,220 SH SOLE 477,220 RYLAND GROUP INC COM 783764103 1,067 24,500 SH SOLE 1 24,500 RYLAND GROUP INC COM 783764103 588 13,500 SH SOLE 13,500 RYLAND GROUP INC COM 783764103 4,200 96,400 SH CALL SOLE 1 96,400 RYLAND GROUP INC COM 783764103 2,335 53,600 SH CALL SOLE 53,600 SEARS HLDGS CORP COM 812350106 8,417 54,200 SH SOLE 1 54,200 SEARS HLDGS CORP COM 812350106 4,706 30,300 SH SOLE 30,300 SERVICES ACQUISITION CORP IN COM 817628100 1,302 131,500 SH SOLE 1 131,500 SERVICES ACQUISITION CORP IN COM 817628100 714 72,100 SH SOLE 72,100 SERVICES ACQUISITION CORP IN W EXP 02/14/200 817628118 1,012 256,800 SH SOLE 1 256,800 SERVICES ACQUISITION CORP IN W EXP 02/14/200 817628118 562 142,700 SH SOLE 142,700 SHAW GRP COM 820280105 3,514 126,400 SH SOLE 1 126,400 SHAW GRP COM 820280105 2,046 73,600 SH SOLE 73,600 SOUTHERN COPPER CORP COM 84265V105 5,383 60,400 SH SOLE 1 60,400 SOUTHERN COPPER CORP COM 84265V105 3,084 34,600 SH SOLE 34,600 SPANISH BROADCASTING SYSTEM INC CL A 846425882 1,315 257,400 SH SOLE 1 257,400 SPANISH BROADCASTING SYSTEM INC CL A 846425882 738 144,500 SH SOLE 144,500 SPRINT NEXTEL COPR COM FON 852061100 1,629 81,500 SH SOLE 1 81,500 SPRINT NEXTEL COPR COM FON 852061100 930 46,500 SH SOLE 46,500 STAR MARITIME ACQUISITION CO COM 85516E107 9,144 900,000 SH SOLE 1 900,000 STAR MARITIME ACQUISITION CO COM 85516E107 5,080 500,000 SH SOLE 500,000 STAR MARITIME ACQUISITION CO W EXP 12/15/200 85516E115 598 580,275 SH SOLE 1 580,275 STAR MARITIME ACQUISITION CO W EXP 12/15/200 85516E115 327 317,300 SH SOLE 317,300 SUNTERRA CORP COM NEW 86787D208 1,796 175,400 SH SOLE 1 175,400 SUNTERRA CORP COM NEW 86787D208 1,047 102,200 SH SOLE 102,200 SYMANTEC CORP COM 871503108 1,338 86,100 SH SOLE 86,100 SYNTROLEUM CORP COM 871630109 1,653 272,300 SH SOLE 1 272,300 SYNTROLEUM CORP COM 871630109 963 158,700 SH SOLE 158,700

TRW AUTOMOTIVE HLDGS CORP COM 87264S106 4,447 163,000 SH SOLE 1 163,000 TRW AUTOMOTIVE HLDGS CORP COM 87264S106 2,521 92,400 SH SOLE 92,400 TXU CORP COM 873168108 22,666 379,100 SH PUT SOLE 1 379,100 TXU CORP COM 873168108 13,208 220,900 SH PUT SOLE 220,900 TATA MTRS LTD SPONSORED ADR 876568502 3,314 192,100 SH SOLE 1 192,100 TATA MTRS LTD SPONSORED ADR 876568502 1,861 107,900 SH SOLE 107,900 TERRA INDS COM COM 880915103 7,031 1,103,800 SH SOLE 1 1,103,800 TERRA INDS COM COM 880915103 4,094 642,700 SH SOLE 642,700 THERMO ELECTRON CORP COM 883556102 5,802 160,100 SH CALL SOLE 1 160,100 THERMO ELECTRON CORP COM 883556102 3,258 89,900 SH CALL SOLE 89,900 TOLL BROTHERS INC COM 889478103 3,276 128,100 SH SOLE 1 128,100 TOLL BROTHERS INC COM 889478103 1,838 71,900 SH SOLE 71,900 USEC INC COM 90333E108 5,144 434,130 SH SOLE 1 434,130 USEC INC COM 90333E108 2,995 252,770 SH SOLE 252,770 US AIRWAYS GROUP INC COM 90341W108 10,457 206,900 SH SOLE 1 206,900 US AIRWAYS GROUP INC COM 90341W108 6,060 119,900 SH SOLE 119,900 UNISOURCE ENERGY CORP COM 909205106 18,188 583,900 SH SOLE 583,900 UNITED STATES STEEL CORP NEW COM 912909108 12,264 174,900 SH SOLE 1 174,900 UNITED STATES STEEL CORP NEW COM 912909108 19,395 276,600 SH SOLE 276,600 UNITED STATES STEEL CORP NEW COM 912909108 8,863 126,400 SH CALL SOLE 1 126,400 UNITED STATES STEEL CORP NEW COM 912909108 5,161 73,600 SH CALL SOLE 73,600 VALERO ENERGY CORP NEW COM 91913Y100 6,306 94,800 SH SOLE 1 94,800 VALERO ENERGY CORP NEW COM 91913Y100 3,672 55,200 SH SOLE 55,200 VODAFONE GROUP PLC NEW SPONSORED ADR 92857W100 7,636 358,500 SH SOLE 358,500 WAL MART STORES INC COM 931142103 2,076 43,100 SH CALL SOLE 43,100 WASHINGTON GROUP INTL INC COM NEW 938862208 9,034 169,360 SH SOLE 1 169,360 WASHINGTON GROUP INTL INC COM NEW 938862208 5,261 98,640 SH SOLE 98,640 WEYERHAEUSER COM 962166104 9,305 149,470 SH SOLE 1 149,470 WEYERHAEUSER COM 962166104 5,418 87,030 SH SOLE 87,030 WHEELING PITTSBURGH CORP COM NEW 963142302 2,962 148,900 SH SOLE 1 148,900 WHEELING PITTSBURGH CORP COM NEW 963142302 3,109 156,300 SH SOLE 156,300 WILLIAMS COS INC DEL COM 969457100 23,502 1,006,090 SH SOLE 1 1,006,090 WILLIAMS COS INC DEL COM 969457100 9,748 417,310 SH SOLE 417,310 WILLIAMS PARTNERS L P COM UNIT L P 96950F104 747 23,746 SH SOLE 1 23,746 WILLIAMS PARTNERS L P COM UNIT L P 96950F104 411 13,054 SH SOLE 13,054

SENECA CAPITAL ADVISORS LLC 13F-HR