Skip to main content

Westchester Capital Management, LLC

13F filer · CIK 0001512805
Reported Aug 14, 2026
Net seller this quarter
13F portfolio value$2.04BU.S. long equity reported on 13F
Positions27665 new · 60 closed
Net flow last quarter-$79.1MBuys minus sells
Top 10 positions weight48.8%Concentration

Holdings

13F · last 4 quarters free
Scroll for earlier quarters
CompanyValue% of portfolio% of companyPOSITION CHANGE qoq %First reported
Q2 2026Reported Aug 14, 2026276 positions
EAElectronic Arts Inc.$169M8.29%Not reported+13.9%Q3 2025
NSCNorfolk Southern Corp$162M7.94%0.23%+2.8%Q3 2025
WBDWarner Bros. Discovery, Inc.$152M7.46%0.23%+9.2%Q2 2022
GTLSChart Industries Inc$128M6.28%1.28%+23.7%Q3 2025
WBSWebster Financial Corp$107M5.23%0.86%-23.8%Q1 2026
UNFUnifirst Corp$76M3.72%1.45%+11.1%Q1 2026
DBRGDigitalBridge Group, Inc.$58.3M2.86%2.03%+25.8%Q1 2026
PENPenumbra Inc$49.7M2.43%0.40%+105.5%Q1 2026
QRVOQorvo, Inc.$49.7M2.43%0.60%+101.8%Q1 2026
ROKURoku, Inc$43.4M2.13%0.21%NewQ2 2026
CZRCaesars Entertainment, Inc.$41.6M2.04%0.68%+532.5%Q4 2017
ANSCAgriculture & Natural Solutions Acquisition Corporation$23.2M1.14%Not reportedNot reportedQ1 2024
KVUEKenvue Inc.$19.5M0.96%0.05%+208.7%Q4 2023
OGNOrganon & Co.$19.3M0.95%0.54%NewQ2 2026
SEMSelect Medical Holdings Corp$16.2M0.79%0.79%NewQ2 2026
BLDTopBuild Corp$15.9M0.78%0.13%NewQ2 2026
KFIIK&F Growth Acquisition Corp. II$15.6M0.76%Not reportedNot reportedQ1 2025
AESAes Corp$14.9M0.73%0.14%NewQ2 2026
GTERAGloba Terra Acquisition Corp$14.6M0.71%Not reportedNot reportedQ3 2025
GIWGigCapital8 Corp.$13.4M0.65%Not reportedNot reportedQ4 2025
OYSEOyster Enterprises II Acquisition Corp$13.4M0.65%Not reportedNot reportedQ3 2025
KCHVKochav Defense Acquisition Corp.$13.3M0.65%Not reportedNot reportedQ3 2025
SOULSoulpower Acquisition Corp.$13.2M0.65%4.99%Not reportedQ3 2025
SDHISiddhi Acquisition Corp (Cayman Islands)$13M0.64%Not reportedNot reportedQ2 2025
PACHPioneer Acquisition I Corp$12.9M0.63%Not reportedNot reportedQ3 2025
JACSJackson Acquisition Co II$12.6M0.62%Not reportedNot reportedQ2 2025
ALDFAldel Financial II Inc.$12.4M0.61%3.88%Not reportedQ4 2024
SZZLSizzle Acquisition Corp. II$12.2M0.60%Not reported-24.8%Q3 2022
POLEAndretti Acquisition Corp. II$11.9M0.58%Not reportedNot reportedQ4 2024
NPACNew Providence Acquisition Corp. III/Cayman$11.7M0.57%Not reportedNot reportedQ4 2025
OBAOxley Bridge Acquisition Ltd$11.4M0.56%Not reportedNot reportedQ3 2025
AACBArtius II Acquisition Inc.$10.4M0.51%Not reportedNot reportedQ2 2025
CRAQCal Redwood Acquisition Corp.$10.3M0.50%Not reportedNot reportedQ3 2025
LPBBLaunch Two Acquisition Corp.$10.2M0.50%Not reportedNot reportedQ4 2024
APXTApex Treasury Corp$10.1M0.49%Not reportedNot reportedQ4 2019
APGEApogee Therapeutics, Inc.$9.68M0.47%0.10%NewQ2 2026
NTWONewbury Street II Acquisition Corp$9.55M0.47%Not reportedNot reportedQ4 2024
JENAJENA ACQUISITION Corp II$9.45M0.46%Not reportedNot reportedQ3 2025
QLEPQuantum Leap Acquisition Corp$9.43M0.46%Not reportedNewQ2 2026
GSRFGSR IV Acquisition Corp.$9.14M0.45%Not reportedNot reportedQ1 2026
TACHTitan Acquisition Corp.$9.05M0.44%Not reported-35.3%Q3 2025
COPLCopley Acquisition Corp$8.98M0.44%Not reportedNot reportedQ2 2025
XRPNArmada Acquisition Corp. II$8.68M0.43%Not reportedNot reportedQ2 2025
RDAGRepublic Digital Acquisition Co$8.51M0.42%Not reportedNot reportedQ1 2026
MLAAMountain Lake Acquisition Corp. II$8.48M0.41%Not reportedNewQ2 2026
LWACLightWave Acquisition Corp.$8.4M0.41%Not reportedNot reportedQ4 2025
HAVAHarvard Ave Acquisition Corp$8.07M0.40%Not reported+302.2%Q4 2025
FACTFACT II Acquisition Corp.$7.72M0.38%Not reportedNot reportedQ4 2024
MKLYMcKinley Acquisition Corp$7.5M0.37%Not reportedNot reportedQ4 2025
TACOBerto Acquisition Corp.$7.38M0.36%9.38%Not reportedQ4 2025
Q1 2026Reported May 15, 2026269 positions
EAElectronic Arts Inc.$148M6.70%Not reported+22.1%Q3 2025
NSCNorfolk Southern Corp$144M6.52%0.22%+29.4%Q3 2025
WBDWarner Bros. Discovery, Inc.$144M6.51%0.21%+43.4%Q2 2022
WBSWebster Financial Corp$127M5.77%1.13%NewQ1 2026
GTLSChart Industries Inc$103M4.65%1.04%Not reportedQ3 2025
UNFUnifirst Corp$65M2.95%1.30%NewQ1 2026
CWANClearwater Analytics Holdings, Inc.$61.9M2.80%Not reportedNewQ1 2026
CTRACentra Software Inc$55.8M2.53%Not reportedNewQ1 2026
DBRGDigitalBridge Group, Inc.$45.3M2.05%1.61%NewQ1 2026
SEESealed Air Corp$39.8M1.80%0.64%+10.8%Q1 2017
PRAProassurance Corp$36M1.63%2.82%-9.4%Q1 2025
HOLXHologic Inc$34.4M1.56%0.20%+42.4%Q4 2025
PENPenumbra Inc$25.2M1.14%0.20%NewQ1 2026
MASIMasimo Corp$24.6M1.12%0.27%NewQ1 2026
ANSCAgriculture & Natural Solutions Acquisition Corporation$23.1M1.04%Not reported+4.1%Q1 2024
HYACHaymaker Acquisition Corp. 4$22.2M1.01%Not reportedNot reportedQ3 2018
ALSumisho Air Lease Corporation$21.7M0.98%0.30%Not reportedQ3 2025
QRVOQorvo, Inc.$20.4M0.93%0.30%NewQ1 2026
DMAADrugs Made In America Acquisition Corp.$17.5M0.79%15.57%Not reportedQ1 2025
SZZLSizzle Acquisition Corp. II$16M0.73%Not reported-0.2%Q3 2022
KFIIK&F Growth Acquisition Corp. II$15.4M0.70%Not reported-21.7%Q1 2025
GTERAGloba Terra Acquisition Corp$14.5M0.66%Not reportedNot reportedQ3 2025
TACHTitan Acquisition Corp.$13.9M0.63%Not reportedNot reportedQ3 2025
GIWGigCapital8 Corp.$13.3M0.60%Not reported+23.2%Q4 2025
OYSEOyster Enterprises II Acquisition Corp$13.2M0.60%Not reportedNot reportedQ3 2025
KCHVKochav Defense Acquisition Corp.$13.2M0.60%Not reportedNot reportedQ3 2025
SOULSoulpower Acquisition Corp.$13.1M0.59%4.99%Not reportedQ3 2025
SDHISiddhi Acquisition Corp (Cayman Islands)$13M0.59%Not reported-7.4%Q2 2025
PACHPioneer Acquisition I Corp$12.8M0.58%Not reported+208.0%Q3 2025
JACSJackson Acquisition Co II$12.6M0.57%Not reportedNot reportedQ2 2025
ALDFAldel Financial II Inc.$12.3M0.56%3.88%Not reportedQ4 2024
POLEAndretti Acquisition Corp. II$11.8M0.54%Not reportedNot reportedQ4 2024
NPACNew Providence Acquisition Corp. III/Cayman$11.6M0.52%Not reported-11.7%Q4 2025
OBAOxley Bridge Acquisition Ltd$11.3M0.51%Not reported+21.8%Q3 2025
VACHVoyager Acquisition Corp./Cayman Islands$10.3M0.47%3.80%-23.8%Q4 2024
AACBArtius II Acquisition Inc.$10.3M0.47%Not reportedNot reportedQ2 2025
CRAQCal Redwood Acquisition Corp.$10.2M0.46%Not reported+53.9%Q3 2025
LPBBLaunch Two Acquisition Corp.$10.1M0.46%Not reportedNot reportedQ4 2024
APXTApex Treasury Corp$9.99M0.45%Not reported+100.0%Q4 2019
PLMKPlum Acquisition Corp, IV$9.73M0.44%Not reported-24.8%Q1 2025
ATIIArchimedes Tech SPAC Partners II Co.$9.44M0.43%13.77%Not reportedQ2 2025
NTWONewbury Street II Acquisition Corp$9.44M0.43%Not reportedNot reportedQ4 2024
MLACMountain Lake Acquisition Corp.$9.35M0.42%Not reportedNot reportedQ1 2025
GPATGP-Act III Acquisition Corp.$9.33M0.42%Not reported-36.7%Q3 2024
JENAJENA ACQUISITION Corp II$9.32M0.42%Not reportedNot reportedQ3 2025
APLSApellis Pharmaceuticals, Inc.$9.15M0.41%0.18%NewQ1 2026
GSRFGSR IV Acquisition Corp.$9.03M0.41%Not reportedNewQ1 2026
COPLCopley Acquisition Corp$8.86M0.40%Not reportedNot reportedQ2 2025
XRPNArmada Acquisition Corp. II$8.59M0.39%Not reportedNot reportedQ2 2025
RDAGRepublic Digital Acquisition Co$8.43M0.38%Not reportedNewQ1 2026
Q4 2025Reported Feb 13, 2026254 positions
EAElectronic Arts Inc.$121M5.10%Not reported+360.0%Q3 2025
NSCNorfolk Southern Corp$112M4.70%0.17%+196.3%Q3 2025
WBDWarner Bros. Discovery, Inc.$105M4.42%0.15%+185.5%Q2 2022
GTLSChart Industries Inc$102M4.30%1.10%-9.7%Q3 2025
FYBRFrontier Communications Parent, Inc.$87.9M3.69%Not reported+10.3%Q3 2024
EXKEndeavour Silver Corp$76.3M3.21%0.29%NewQ4 2025
TECKTeck Resources Ltd$75M3.15%Not reported-16.0%Q2 2023
RNAMAvidity Biosciences, Inc.$69.4M2.92%0.64%NewQ4 2025
CMAComerica Inc$57.2M2.40%0.52%NewQ4 2025
PRAProassurance Corp$38.8M1.63%3.12%-8.8%Q1 2025
DAYDayforce, Inc.$37.8M1.59%0.34%NewQ4 2025
SEESealed Air Corp$35.4M1.49%0.58%Not reportedQ1 2017
AAMApollo Asset Management, Inc.$28.8M1.21%270117.20%Not reportedQ3 2024
CFLTConfluent, Inc.$25.9M1.09%0.78%NewQ4 2025
LBRDALiberty Broadband Corp$25.6M1.08%Not reported-29.8%Q1 2025
HOLXHologic Inc$23.8M1.00%0.14%NewQ4 2025
TGNATegna Inc$23.1M0.97%Not reportedNot reportedQ4 2021
HYACHaymaker Acquisition Corp. 4$22.1M0.93%Not reportedNot reportedQ3 2018
ANSCAgriculture & Natural Solutions Acquisition Corporation$21.9M0.92%Not reported-20.3%Q1 2024
ALSumisho Air Lease Corporation$21.5M0.90%0.30%+117.6%Q3 2025
KFIIK&F Growth Acquisition Corp. II$19.5M0.82%Not reportedNot reportedQ1 2025
DMAADrugs Made In America Acquisition Corp.$17.3M0.73%15.57%Not reportedQ1 2025
SZZLSizzle Acquisition Corp. II$15.9M0.67%Not reportedNot reportedQ3 2022
CTLPCantaloupe, Inc.$14.8M0.62%Not reportedNot reportedQ2 2025
GPATGP-Act III Acquisition Corp.$14.6M0.61%Not reported+22.5%Q3 2024
GTERAGloba Terra Acquisition Corp$14.3M0.60%Not reportedNot reportedQ3 2025
CADECadence Financial Corp$14.1M0.59%Not reportedNot reportedQ2 2021
SDHISiddhi Acquisition Corp (Cayman Islands)$13.9M0.58%Not reported+103.9%Q2 2025
TACHTitan Acquisition Corp.$13.8M0.58%Not reportedNot reportedQ3 2025
VACHVoyager Acquisition Corp./Cayman Islands$13.5M0.57%4.99%Not reportedQ4 2024
SIMASIM Acquisition Corp. I$13.5M0.57%Not reportedNot reportedQ3 2024
NPACNew Providence Acquisition Corp. III/Cayman$13.1M0.55%Not reportedNewQ4 2025
OYSEOyster Enterprises II Acquisition Corp$13.1M0.55%Not reported+191.0%Q3 2025
THSTreeHouse Foods, Inc.$13.1M0.55%1.10%NewQ4 2025
KCHVKochav Defense Acquisition Corp.$13M0.55%Not reported+349.7%Q3 2025
SOULSoulpower Acquisition Corp.$13M0.55%206.34%Not reportedQ3 2025
PLMKPlum Acquisition Corp, IV$12.8M0.54%Not reportedNot reportedQ1 2025
JACSJackson Acquisition Co II$12.4M0.52%Not reportedNot reportedQ2 2025
ALDFAldel Financial II Inc.$12.2M0.51%3.88%Not reportedQ4 2024
POLEAndretti Acquisition Corp. II$11.7M0.49%Not reported-4.4%Q4 2024
GIWGigCapital8 Corp.$10.7M0.45%Not reportedNewQ4 2025
AACBArtius II Acquisition Inc.$10.3M0.43%Not reportedNot reportedQ2 2025
BCARD. Boral ARC Acquisition I Corp.$10.1M0.42%1002475.00%-9.4%Q3 2025
LPBBLaunch Two Acquisition Corp.$9.98M0.42%Not reportedNot reportedQ4 2024
FACTFACT II Acquisition Corp.$9.6M0.40%Not reported-15.0%Q4 2024
ATIIArchimedes Tech SPAC Partners II Co.$9.4M0.39%13.77%+0.8%Q2 2025
NTWONewbury Street II Acquisition Corp$9.39M0.39%Not reportedNot reportedQ4 2024
JENAJENA ACQUISITION Corp II$9.28M0.39%Not reported+78.1%Q3 2025
MLACMountain Lake Acquisition Corp.$9.23M0.39%Not reported-24.9%Q1 2025
OBAOxley Bridge Acquisition Ltd$9.23M0.39%Not reported+80.6%Q3 2025
Q3 2025Reported Nov 14, 2025222 positions
COOPCooperative Bankshares Inc$155M7.10%Not reported+47.7%Q2 2025
GTLSChart Industries Inc$110M5.03%1.22%NewQ3 2025
TECKTeck Resources Ltd$81.8M3.74%Not reportedNot reportedQ2 2023
FYBRFrontier Communications Parent, Inc.$78.2M3.58%Not reported-6.1%Q3 2024
IPGInterpublic Group of Companies, Inc.$63.7M2.91%0.62%+8.0%Q4 2024
VRNAVerona Pharma plc$51.6M2.36%0.07%NewQ3 2025
LBRDALiberty Broadband Corp$47.9M2.19%Not reported+1.8%Q1 2025
PRAProassurance Corp$42.3M1.93%3.43%-1.4%Q1 2025
NSCNorfolk Southern Corp$39.3M1.80%0.06%NewQ3 2025
AAMApollo Asset Management, Inc.$28.4M1.30%270117.20%+23.3%Q3 2024
ANSCAgriculture & Natural Solutions Acquisition Corporation$26.9M1.23%Not reportedNot reportedQ1 2024
EAElectronic Arts Inc.$26.1M1.19%Not reportedNewQ3 2025
WBDWarner Bros. Discovery, Inc.$25M1.14%0.05%Not reportedQ2 2022
TGNATegna Inc$24.2M1.11%Not reportedNot reportedQ4 2021
HYACHaymaker Acquisition Corp. 4$22M1.01%Not reported+63.1%Q3 2018
KFIIK&F Growth Acquisition Corp. II$19.3M0.88%Not reportedNot reportedQ1 2025
DMAADrugs Made In America Acquisition Corp.$17.1M0.78%15.87%Not reportedQ1 2025
SZZLSizzle Acquisition Corp. II$15.8M0.72%Not reported+794.1%Q3 2022
CTLPCantaloupe, Inc.$14.7M0.67%Not reported-2.9%Q2 2025
NETDNabors Energy Transition Corp. II$14.5M0.66%Not reported-12.9%Q4 2023
GTERAGloba Terra Acquisition Corp$14.1M0.65%Not reportedNewQ3 2025
TACHTitan Acquisition Corp.$13.6M0.62%Not reportedNewQ3 2025
SIMASIM Acquisition Corp. I$13.3M0.61%Not reported+3.7%Q3 2024
SPRSpirit AeroSystems Holdings, Inc.$13.3M0.61%0.29%Not reportedQ2 2025
VBTXVeritex Holdings, Inc.$13.2M0.60%0.72%NewQ3 2025
VACHVoyager Acquisition Corp./Cayman Islands$13.2M0.60%4.99%Not reportedQ4 2024
MRLNMerlin, Inc.$13.2M0.60%Not reported-28.3%Q4 2024
NPACUNew Providence Acquisition Corp. III/Cayman$13.1M0.60%Not reported-0.1%Q2 2025
SOULSoulpower Acquisition Corp.$12.9M0.59%206.34%NewQ3 2025
PLMKPlum Acquisition Corp, IV$12.7M0.58%Not reportedNot reportedQ1 2025
BACCBlue Acquisition Corp/Cayman$12.5M0.57%Not reportedNewQ3 2025
JACSJackson Acquisition Co II$12.3M0.56%Not reportedNot reportedQ2 2025
MLACMountain Lake Acquisition Corp.$12.2M0.56%Not reportedNot reportedQ1 2025
POLEAndretti Acquisition Corp. II$12.2M0.56%Not reportedNot reportedQ4 2024
ALDFAldel Financial II Inc.$12.1M0.55%3.88%Not reportedQ4 2024
GPATGP-Act III Acquisition Corp.$11.8M0.54%Not reported-4.3%Q3 2024
FACTFACT II Acquisition Corp.$11.2M0.51%Not reportedNot reportedQ4 2024
BCARD. Boral ARC Acquisition I Corp.$11M0.50%Not reportedNewQ3 2025
MRUSMerus N.V.$10.7M0.49%0.15%NewQ3 2025
CHACCrane Harbor Acquisition Corp.$10.4M0.47%Not reportedNewQ3 2025
KCHVUKochav Defense Acquisition Corp.$10.2M0.47%Not reportedNot reportedQ2 2025
AACBArtius II Acquisition Inc.$10.1M0.46%Not reportedNot reportedQ2 2025
LPBBLaunch Two Acquisition Corp.$9.92M0.45%Not reportedNot reportedQ4 2024
ALSumisho Air Lease Corporation$9.78M0.45%0.14%NewQ3 2025
NTWONewbury Street II Acquisition Corp$9.3M0.43%Not reported+23.9%Q4 2024
ATIIArchimedes Tech SPAC Partners II Co.$9.19M0.42%13.66%+38.5%Q2 2025
COPLCopley Acquisition Corp$8.7M0.40%Not reported+700.6%Q2 2025
ARISAris Mining Corp$8.67M0.40%0.21%NewQ3 2025
PACHUPioneer Acquisition I Corp$8.54M0.39%Not reported+240.0%Q2 2025
OYSEUOyster Enterprises II Acquisition Corp$8.5M0.39%Not reportedNot reportedQ2 2025
Premium opens every quarter this fund has filed

Not investment advice. We make every effort to keep the information on SpoorBase accurate, but errors may occur. SpoorBase does not guarantee the accuracy or completeness of any data, and any use of the information is at the user’s sole responsibility. Valuation multiples are calculated by SpoorBase and may contain errors. See Disclosures. © 2026 SpoorBase. All rights reserved.