13F Filings History of Westchester Capital Management, LLC

Latest 13F report
Q4 2025 - 13 Feb 2026
Value $
$2,126,129,458
Signature - Title
CaSaundra Wu - Chief Compliance Officer
Location
Valhalla, NY
Summary
This page shows a list of all the recent 13F filings made by Westchester Capital Management, LLC. Form 13F is required to be filed within 45 days of the end of a calendar quarter. Westchester Capital Management, LLC reported 277 stock holdings with total value $2,126,129,458 as of Q4 2025. Top holdings included CYBR, EA, NSC, WBD, and GTLS.

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Holdings Value
Quarter Holdings Value $ Bought Sold Net Top Holdings Form Type Filing Time
Q4 2025 277 $2,126,129,458 +$898,210,330 -$707,972,406 +$190,237,924 CYBR, EA, NSC, WBD, GTLS 13F-HR 13 Feb 2026, 17:04
Q3 2025 246 $1,929,250,824 +$901,073,982 -$705,982,579 +$195,091,403 COOP, K, CYBR, GTLS, TECK 13F-HR 13 Nov 2025, 18:09
Q2 2025 203 $1,710,688,746 +$660,936,811 -$635,651,054 +$25,285,757 HES, K, CHX, FYBR, COOP 13F-HR 14 Aug 2025, 09:07
Q1 2025 161 $1,725,102,875 +$635,895,314 -$711,206,734 -$75,311,420 HES, K, CHX, DFS, BERY 13F-HR 14 May 2025, 17:08
Q4 2024 159 $1,721,054,280 +$603,746,417 -$1,041,026,723 -$437,280,306 HES, EDR, K, HCP, CHX 13F-HR 14 Feb 2025, 13:09
Q3 2024 183 $2,159,186,650 +$609,673,419 -$810,268,982 -$200,595,563 HES, EDR, SWN, HCP, AMED 13F-HR 14 Nov 2024, 16:24
Q2 2024 213 $2,336,123,847 +$800,877,687 -$782,225,481 +$18,652,206 HES, EDR, WRK, X, AMED 13F-HR 14 Aug 2024, 16:06
Q1 2024 230 $2,361,038,397 +$748,094,005 -$936,646,624 -$188,552,619 PXD, HES, WRK, X, AMED 13F-HR 15 May 2024, 13:41
Q4 2023 257 $2,481,244,473 +$1,305,667,418 -$1,782,717,707 -$477,050,289 PXD, HES, SPLK, WRK, SRC 13F-HR 14 Feb 2024, 21:33
Q3 2023 288 $2,910,176,144 +$1,240,383,274 -$1,311,626,333 -$71,243,059 ATVI, HZNP, SGEN, VMW, CPRI 13F-HR 08 Nov 2023, 15:08
Q2 2023 308 $2,890,281,559 +$1,121,126,308 -$1,341,199,222 -$220,072,914 HZNP, ATVI, VMW, SGEN, AJRD 13F-HR 14 Aug 2023, 14:02
Q1 2023 348 $3,138,041,287 +$1,655,837,327 -$1,965,471,935 -$309,634,608 HZNP, FHN, VMW, DCP, ATVI 13F-HR 15 May 2023, 15:07
Q4 2022 435 $3,466,823,925 +$1,716,892,659 -$1,593,723,269 +$123,169,390 FHN, HZNP, VMW, STOR, LHCG 13F-HR 14 Feb 2023, 15:32
Q3 2022 491 $3,336,794,000 +$1,420,564,416 -$1,291,571,060 +$128,993,356 BHVN, FHN, AAWW, AVLR, LHCG Restatement 17 Nov 2022, 16:35
Q2 2022 443 $3,213,547,000 +$1,073,199,931 -$924,990,082 +$148,209,849 COHR, ACC, FHN, CTXS, SAIL 13F-HR 15 Aug 2022, 17:54
Q1 2022 426 $3,161,624,000 +$1,568,628,695 -$1,665,510,881 -$96,882,186 CERN, COHR, ZNGA, HTA, CCMP 13F-HR 16 May 2022, 13:21
Q4 2021 393 $3,279,560,000 +$1,055,723,818 -$1,095,177,696 -$39,453,878 INFO, XLNX, NUAN, COHR, BBL 13F-HR 14 Feb 2022, 16:17
Q3 2021 358 $3,163,722,000 +$1,096,940,563 -$1,849,590,302 -$752,649,739 INFO, NUAN, COHR, KSU, XLNX 13F-HR 15 Nov 2021, 14:10
Q2 2021 322 $3,931,990,000 +$1,566,037,684 -$1,149,443,584 +$416,594,100 WTW, ALXN, INFO, WORK, MXIM 13F-HR 13 Aug 2021, 14:26
Q1 2021 323 $3,352,313,000 +$1,620,213,988 -$944,607,479 +$675,606,509 WTW, VAR, ALXN, IPHI, WORK 13F-HR 17 May 2021, 15:53
Q4 2020 201 $2,676,205,000 +$1,682,038,437 -$1,202,076,165 +$479,962,272 WTW, VAR, TIF, WORK, IPHI 13F-HR 12 Feb 2021, 17:30
Q3 2020 174 $2,072,909,000 +$798,579,685 -$668,646,640 +$129,933,045 WTW, WMGI, ETFC, TIF, AMTD 13F-HR 16 Nov 2020, 13:49
Q2 2020 135 $1,907,541,000 +$641,081,634 -$1,030,936,174 -$389,854,540 WMGI, WTW, TIF, ETFC, TECD 13F-HR 14 Aug 2020, 13:33
Q1 2020 153 $2,181,198,000 +$1,067,864,636 -$855,938,879 +$211,925,757 TIF, CY, WMGI, WBC, TECD 13F-HR 14 May 2020, 13:34
Q4 2019 138 $2,225,151,000 +$1,254,716,295 -$1,303,708,198 -$48,991,903 AGN, TSG, ZAYO, TIF, CY 13F-HR 14 Feb 2020, 15:05
Q3 2019 116 $2,208,807,000 +$884,610,372 -$1,269,366,635 -$384,756,263 STI, CELG, OAK, AGN, AABA 13F-HR 14 Nov 2019, 10:31
Q2 2019 113 $2,829,648,000 +$1,132,733,744 -$614,787,701 +$517,946,043 AABA, RHT, FDC, APC, STI 13F-HR 14 Aug 2019, 09:20
Q1 2019 104 $2,292,478,000 +$1,172,114,270 -$951,503,098 +$220,611,172 AABA, RHT, FDC, GG, WP 13F-HR 15 May 2019, 09:44
Q4 2018 102 $1,944,125,000 +$1,092,618,876 -$1,160,162,946 -$67,544,070 AABA, FOX, RHT, ARRS, DM 13F-HR 14 Feb 2019, 10:30
Q3 2018 102 $2,084,537,000 +$655,965,596 -$556,974,944 +$98,990,652 AABA, FOX, COL, AET, ANDV 13F-HR 14 Nov 2018, 15:06
Q2 2018 89 $2,040,267,000 +$555,822,412 -$671,827,662 -$116,005,250 AABA, FOX, NXPI, COL, AET 13F-HR 14 Aug 2018, 15:24
Q1 2018 92 $2,117,131,000 +$678,615,822 -$578,319,586 +$100,296,236 AABA, NXPI, TWX, COL, FOX 13F-HR 15 May 2018, 14:49
Q4 2017 78 $2,018,254,000 +$764,961,404 -$990,915,218 -$225,953,814 AABA, TWX, NXPI, DWDP, COL 13F-HR 14 Feb 2018, 10:22
Q3 2017 58 $2,225,917,000 +$689,685,366 -$884,355,827 -$194,670,461 AABA, TWX, NXPI, BCR, RICE 13F-HR 14 Nov 2017, 12:40
Q2 2017 57 $2,373,726,000 +$1,002,162,528 -$1,157,743,804 -$155,581,276 AABA, NXPI, RAI, TWX, BCR 13F-HR 14 Aug 2017, 10:20
Q1 2017 64 $2,572,227,000 +$1,051,164,957 -$1,714,613,482 -$663,448,525 RAI, YHOO, TWX, NXPI, DD 13F-HR 15 May 2017, 10:03
Q4 2016 68 $3,060,243,000 +$1,827,138,182 -$1,317,300,746 +$509,837,436 YHOO, STJ, HAR, ACAS, NXPI 13F-HR 14 Feb 2017, 12:36
Q3 2016 61 $2,528,021,000 +$751,697,884 -$1,548,706,687 -$797,008,803 YHOO, LNKD, KLAC, IM, STJ 13F-HR 14 Nov 2016, 09:35
Q2 2016 72 $3,222,113,000 +$1,027,550,309 -$1,607,797,159 -$580,246,850 EMC, HOT, KLAC, TYC, YHOO 13F-HR 15 Aug 2016, 10:33
Q1 2016 74 $3,850,732,000 +$1,506,939,850 -$1,516,514,899 -$9,575,049 TWC, HOT, YHOO, EMC, KLAC 13F-HR 16 May 2016, 11:36
Q4 2015 76 $3,892,660,000 +$1,208,895,241 -$1,902,409,256 -$693,514,015 PCP, BRCM, TWC, PRE, YHOO 13F-HR 16 Feb 2016, 12:12
Q3 2015 93 $4,493,043,000 +$1,679,599,635 -$1,965,537,835 -$285,938,200 PCP, TWC, AIG, BRCM, CB 13F-HR 16 Nov 2015, 09:20
Q2 2015 92 $5,290,440,000 +$2,122,501,462 -$945,952,609 +$1,176,548,853 CTRX, A309PS, AIG, HSP, FDO 13F-HR 14 Aug 2015, 08:54
Q1 2015 47 $2,939,283,000 $0 $0 $0 TRW, TWC, A309PS, FDO, HSP New Holdings 22 Jul 2015, 14:06
Q1 2015 79 $4,118,825,000 +$1,461,903,804 -$1,842,574,814 -$380,671,010 TRW, TWC, A309PS, FDO, AIG 13F-HR 15 May 2015, 16:07
Q4 2014 79 $4,431,152,000 +$683,141,266 -$1,879,492,122 -$1,196,350,856 TWC, F113PS, AGN, TRW, A309PS 13F-HR 17 Feb 2015, 12:46
Q3 2014 93 $5,603,194,000 +$2,312,074,087 -$1,503,762,785 +$808,311,302 F113PS, A309PS, TWC, AGN, TRW 13F-HR 14 Nov 2014, 09:45
Q2 2014 88 $5,024,416,000 +$1,568,465,312 -$1,437,167,331 +$131,297,981 HSH, TWC, FRX, LAMR, AIG 13F-HR 14 Aug 2014, 11:25
Q1 2014 90 $4,728,652,000 +$1,915,809,668 -$923,681,882 +$992,127,786 OMC, FRX, AIG, LAMR, TWC 13F-HR 15 May 2014, 15:08
Q4 2013 83 $3,762,370,000 $0 $0 $0 OMC, LIFE, LAMR, AIG, TMUS 13F-HR 14 Feb 2014, 15:32