Westchester Capital Management, LLC
Comparing Q4 2025 vs Q3 2025
Sorting applies to all holdings for this quarter on the server, then the page is sliced. Prior-quarter values come from the full prior-quarter filing.
Issuer ▲▼ | Shares | Value ($K) | ||||
|---|---|---|---|---|---|---|
Q3 2025 ▲▼ | Q4 2025 ▲▼ | Change ▲▼ | Q3 2025 ▲▼ | Q4 2025 ▲▼ | Change ▲▼ | |
| ELECTRONIC ARTS INC | 129,166 | 594,161 | +464,995 | 26,052,782 | 121,404,918 | +95,352,136 |
| WARNER BROS DISCOVERY INC | 1,278,300 | 3,649,601 | +2,371,301 | 24,965,199 | 105,181,501 | +80,216,302 |
| EXACT SCIENCES CORP | 0 | 751,561 | +751,561 | 0 | 76,328,535 | +76,328,535 |
| NORFOLK SOUTHN CORP | 130,825 | 387,596 | +256,771 | 39,301,139 | 111,906,717 | +72,605,578 |
| AVIDITY BIOSCIENCES INC | 0 | 962,659 | +962,659 | 0 | 69,436,594 | +69,436,594 |
| COMERICA INC | 0 | 658,366 | +658,366 | 0 | 57,231,757 | +57,231,757 |
| DAYFORCE INC | 0 | 546,665 | +546,665 | 0 | 37,807,351 | +37,807,351 |
| SEALED AIR CORP NEW | 0 | 853,621 | +853,621 | 0 | 35,365,518 | +35,365,518 |
| CONFLUENT INC | 0 | 857,198 | +857,198 | 0 | 25,921,667 | +25,921,667 |
| NEW GOLD INC CDA | 0 | 2,852,255 | +2,852,255 | 0 | 24,843,141 | +24,843,141 |
| HOLOGIC INC | 0 | 319,734 | +319,734 | 0 | 23,816,986 | +23,816,986 |
| CADENCE BANK | 0 | 328,564 | +328,564 | 0 | 14,075,682 | +14,075,682 |
| NEW PROVIDENCE ACQUISITION C | 0 | 1,278,999 | +1,278,999 | 0 | 13,122,530 | +13,122,530 |
| TREEHOUSE FOODS INC | 0 | 553,686 | +553,686 | 0 | 13,061,453 | +13,061,453 |
| CYBERARK SOFTWARE LTD | 278,008 | 327,864 | +49,856 | 134,319,565 | 146,247,016 | +11,927,451 |
| AIR LEASE CORP | 153,700 | 334,421 | +180,721 | 9,783,005 | 21,479,862 | +11,696,857 |
| GIGCAPITAL8 CORP | 0 | 1,080,000 | +1,080,000 | 0 | 10,681,200 | +10,681,200 |
| KOCHAV DEFENSE ACQUI CO | 286,000 | 1,286,000 | +1,000,000 | 2,868,580 | 13,040,040 | +10,171,460 |
| FRONTIER COMMUNICATIONS PARE | 2,093,629 | 2,308,994 | +215,365 | 78,197,043 | 87,903,401 | +9,706,358 |
| OYSTER ENTERPRISES II ACQUIS | 445,112 | 1,295,112 | +850,000 | 4,460,023 | 13,093,583 | +8,633,560 |
| LIGHTWAVE ACQUISITION CORP | 0 | 819,872 | +819,872 | 0 | 8,239,714 | +8,239,714 |
| SIDDHI ACQUISITION CORP | 661,800 | 1,349,197 | +687,397 | 6,717,270 | 13,856,253 | +7,138,983 |
| DUNE ACQUISITION CORP II | 0 | 666,477 | +666,477 | 0 | 6,791,400 | +6,791,400 |
| CROWN RESV ACQUISITION CORP | 0 | 610,000 | +610,000 | 0 | 6,063,400 | +6,063,400 |
| HARVARD AVE ACQUISITION CORP | 0 | 598,790 | +598,790 | 0 | 5,993,888 | +5,993,888 |
| APTIV PLC | 33,000 | 111,900 | +78,900 | 2,845,260 | 8,514,471 | +5,669,211 |
| APTIV PLC(Put) | 33,000 | 111,900 | +78,900 | 2,845,260 | 8,514,471 | +5,669,211 |
| GORES HLDGS X INC | 0 | 515,073 | +515,073 | 0 | 5,300,101 | +5,300,101 |
| DRUGS MADE IN AMER ACQ II CO | 0 | 500,000 | +500,000 | 0 | 4,950,001 | +4,950,001 |
| APEX TREAS CORP | 0 | 500,000 | +500,000 | 0 | 4,945,000 | +4,945,000 |
| AA MISSION ACQUISITION CORP | 0 | 494,185 | +494,185 | 0 | 4,917,141 | +4,917,141 |
| CANTOR EQUITY PARTNERS V INC | 0 | 450,000 | +450,000 | 0 | 4,612,500 | +4,612,500 |
| BERTO ACQUISITION CORP | 0 | 433,460 | +433,460 | 0 | 4,395,284 | +4,395,284 |
| OXLEY BRIDGE ACQ LTD | 508,100 | 917,657 | +409,557 | 5,050,514 | 9,231,629 | +4,181,115 |
| JENA ACQUISITION CORP II | 512,000 | 912,000 | +400,000 | 5,196,800 | 9,275,040 | +4,078,240 |
| AI INFRASTRUCTURE ACQUISI | 0 | 400,000 | +400,000 | 0 | 4,072,000 | +4,072,000 |
| CSX CORP(Put) | 191,600 | 299,800 | +108,200 | 6,803,716 | 10,867,750 | +4,064,034 |
| CSLM DIGITA ASSET ACQ CORP I | 0 | 400,000 | +400,000 | 0 | 3,980,001 | +3,980,001 |
| STARRY SEA ACQUISITION CORP | 0 | 375,000 | +375,000 | 0 | 3,761,249 | +3,761,249 |
| CALISA ACQUISITION CORP | 0 | 354,923 | +354,923 | 0 | 3,524,385 | +3,524,385 |
| ACTIVATE ENERGY ACQUISITION | 0 | 350,000 | +350,000 | 0 | 3,500,000 | +3,500,000 |
| MESHFLOW ACQUISITION CORP | 0 | 350,000 | +350,000 | 0 | 3,500,000 | +3,500,000 |
| PIONEER ACQUISITION I CORP | 64,612 | 408,612 | +344,000 | 642,243 | 4,110,637 | +3,468,394 |
| SOLARIUS CAPITAL ACQU CORP | 300,000 | 640,000 | +340,000 | 2,988,000 | 6,432,000 | +3,444,000 |
| LAUNCHPAD CADENZA ACQUISITIO | 0 | 334,463 | +334,463 | 0 | 3,337,940 | +3,337,940 |
| AI INFRASTRUCTURE ACQUISI | 0 | 331,000 | +331,000 | 0 | 3,290,140 | +3,290,140 |
| SPDR S&P 500 ETF TR(Put) | 200,000 | 200,000 | 0 | 133,236,000 | 136,384,000 | +3,148,000 |
| DRUGS MADE IN AMER ACQ II CO | 200,000 | 502,914 | +302,914 | 1,989,000 | 5,029,140 | +3,040,140 |
| RIBBON ACQUISITION CORP | 0 | 284,734 | +284,734 | 0 | 2,958,386 | +2,958,386 |
| WARNER BROS DISCOVERY INC(Put) | 341,700 | 330,400 | -11,300 | 6,673,401 | 9,522,128 | +2,848,727 |
| THAYER VENTURES ACQ CORP II | 250,000 | 525,000 | +275,000 | 2,507,501 | 5,313,000 | +2,805,499 |
| GP-ACT III ACQUISITION CORP | 1,110,852 | 1,360,852 | +250,000 | 11,775,032 | 14,561,117 | +2,786,085 |
| LAKE SUPERIOR ACQUISITION CO | 0 | 255,000 | +255,000 | 0 | 2,580,601 | +2,580,601 |
| A PARADISE ACQUISITION CORP | 271,794 | 521,794 | +250,000 | 2,690,761 | 5,244,030 | +2,553,269 |
| CROWN RESV ACQUISITION CORP | 0 | 250,000 | +250,000 | 0 | 2,522,500 | +2,522,500 |
| INDIGO ACQUISITION CORP | 0 | 250,000 | +250,000 | 0 | 2,519,999 | +2,519,999 |
| PYROPHYTE ACQUISITION CORP. | 0 | 250,000 | +250,000 | 0 | 2,515,000 | +2,515,000 |
| QUANTUMSPHERE ACQUISITION CO | 0 | 250,000 | +250,000 | 0 | 2,502,501 | +2,502,501 |
| BLUEROCK ACQUISITION CORP | 0 | 250,000 | +250,000 | 0 | 2,500,000 | +2,500,000 |
| MCKINLEY ACQUISITION CORP | 0 | 250,000 | +250,000 | 0 | 2,492,500 | +2,492,500 |
| ITHAX ACQUISITION CORP III | 0 | 250,000 | +250,000 | 0 | 2,490,001 | +2,490,001 |
| BAIN CAP GSS INVT CORP | 25,000 | 250,000 | +225,000 | 252,250 | 2,555,000 | +2,302,750 |
| BRIGHTHOUSE FINL INC | 0 | 34,440 | +34,440 | 0 | 2,231,367 | +2,231,367 |
| BITCOIN INFRASTRUCTURE ACQUI | 0 | 220,000 | +220,000 | 0 | 2,191,199 | +2,191,199 |
| LAFAYETTE ACQUISITION CORP | 0 | 200,000 | +200,000 | 0 | 2,004,000 | +2,004,000 |
| LAKE SUPERIOR ACQUISITION CO | 0 | 200,000 | +200,000 | 0 | 1,988,001 | +1,988,001 |
| HARVARD AVE ACQUISITION CORP | 0 | 198,154 | +198,154 | 0 | 1,971,632 | +1,971,632 |
| KEURIG DR PEPPER INC(Put) | 195,700 | 248,000 | +52,300 | 4,992,307 | 6,946,480 | +1,954,173 |
| DAEDALUS SPL ACQUISITION COR | 0 | 192,208 | +192,208 | 0 | 1,931,691 | +1,931,691 |
| ARMADA ACQUISITION CORP II | 633,400 | 833,400 | +200,000 | 6,612,696 | 8,534,015 | +1,921,319 |
| OAK WOODS ACQUISITION CORP | 8,400 | 163,362 | +154,962 | 100,800 | 1,976,680 | +1,875,880 |
| AXIOM INTELLIGENCE AC CORP 1 | 500,000 | 675,000 | +175,000 | 4,975,000 | 6,797,249 | +1,822,249 |
| SILICON VY ACQUISITION CORP | 0 | 175,000 | +175,000 | 0 | 1,740,374 | +1,740,374 |
| EMMIS ACQUISITION CORP. | 0 | 175,000 | +175,000 | 0 | 1,737,751 | +1,737,751 |
| HIGHVIEW MERGER CORP | 0 | 170,299 | +170,299 | 0 | 1,702,990 | +1,702,990 |
| CAL REDWOOD ACQUISITION CORP | 500,000 | 650,000 | +150,000 | 5,000,000 | 6,617,001 | +1,617,001 |
| COMCAST CORP NEW(Put) | 79,600 | 135,500 | +55,900 | 2,501,032 | 4,050,095 | +1,549,063 |
| APEX TREAS CORP | 0 | 150,000 | +150,000 | 0 | 1,501,501 | +1,501,501 |
| AMERICAN DRIVE ACQUISITION C | 0 | 150,000 | +150,000 | 0 | 1,498,500 | +1,498,500 |
| IRON HORSE ACQUISIT CORP II | 0 | 150,000 | +150,000 | 0 | 1,491,000 | +1,491,000 |
| LEAPFROG ACQUISITION CORP | 0 | 125,000 | +125,000 | 0 | 1,250,625 | +1,250,625 |
| SOCIAL COMM PARTNERS CORP | 0 | 125,000 | +125,000 | 0 | 1,250,000 | +1,250,000 |
| LIONHEART HOLDINGS | 300,000 | 400,036 | +100,036 | 3,153,000 | 4,272,385 | +1,119,385 |
| KRAFT HEINZ CO | 50,200 | 100,000 | +49,800 | 1,307,208 | 2,425,000 | +1,117,792 |
| SILVER PEGASUS ACQUISITION C | 250,000 | 350,000 | +100,000 | 2,492,500 | 3,531,500 | +1,039,000 |
| SILVERBOX CORP V | 0 | 100,000 | +100,000 | 0 | 1,004,000 | +1,004,000 |
| HONEYWELL INTL INC | 12,800 | 18,900 | +6,100 | 2,694,400 | 3,687,201 | +992,801 |
| KRAFT HEINZ CO(Put) | 193,000 | 242,800 | +49,800 | 5,025,720 | 5,887,900 | +862,180 |
| KIMBERLY-CLARK CORP | 0 | 8,155 | +8,155 | 0 | 822,758 | +822,758 |
| STONEBRIDGE ACQUISITION II C | 0 | 80,000 | +80,000 | 0 | 796,000 | +796,000 |
| EGH ACQUISITION CORP. | 250,000 | 325,000 | +75,000 | 2,505,000 | 3,295,499 | +790,499 |
| AA MISSION ACQUISITION CORP | 0 | 78,000 | +78,000 | 0 | 774,540 | +774,540 |
| VIKING ACQUISITION CORP I | 0 | 75,000 | +75,000 | 0 | 751,500 | +751,500 |
| SUNOCOCORP LLC | 0 | 12,829 | +12,829 | 0 | 632,213 | +632,213 |
| KENVUE INC | 0 | 33,200 | +33,200 | 0 | 572,700 | +572,700 |
| KENVUE INC(Put) | 0 | 33,200 | +33,200 | 0 | 572,700 | +572,700 |
| CHURCHILL CAP CORP XI | 0 | 50,000 | +50,000 | 0 | 510,500 | +510,500 |
| BEST SPAC I ACQUISITION CORP | 0 | 50,000 | +50,000 | 0 | 506,500 | +506,500 |
| CRANE HBR ACQUISITION CORP I | 0 | 50,000 | +50,000 | 0 | 503,250 | +503,250 |
| DYNAMIX CORP III | 0 | 50,000 | +50,000 | 0 | 502,500 | +502,500 |