Stocks/Funds/CIK 1512805

Westchester Capital Management, LLC

Quarterly 13F filings · Latest period 2026-03-31 · CIK 1512805
Assets
$2.07B
+21.9% YoY
Holdings
297
Lifetime alpha vs market
-16.32% annual
Average hold time
0.8 yr
median 0.8 yr

Quarterly history

Cum return -25% vs S&P +52% · α -78% lifetimeAUM $2.1B · peak $4.5BFlow $-115M (-5%)2016-062017-122019-062020-122022-062023-122025-062026-03
AUM ($B)fundS&P 500(gap = α)/ Flow in/out

Behavior signals (lifetime)

Dip response
-15.32%
trims when stocks drop
when a holding falls −10%+
Middle response
-5.99%
baseline attrition
Rally response
-34.17%
trims into rallies
when a holding rises +10%+

Top positions · 30

Ticker$ value% portYoYHold time
EAElectronic Arts Inc.$148M7.2%+41.7%0.8 yr
NSCNorfolk Southern Corpora$144M7.0%+23.6%0.8 yr
WBDWarner Bros. Discovery, $144M7.0%+155.9%1.3 yr
WBSWebster Financial Corpor$127M6.2%+38.5%0.3 yr
GTLSChart Industries, Inc.$103M5.0%+43.2%0.8 yr
UNFUniFirst Corporation$65M3.1%+45.6%0.3 yr
CWANClearwater Analytics Hol$62M3.0%-11.8%0.3 yr
CTRACoterra Energy Inc.$56M2.7%+25.8%0.3 yr
0YY7.LDigitalBridge Group, Inc$45M2.2%0.3 yr
SEESealed Air Corporation$40M1.9%+48.7%1.3 yr
PRAProAssurance Corporation$36M1.7%+5.9%1.3 yr
HOLXHologic, Inc.$34M1.7%+22.4%0.5 yr
PENPenumbra, Inc.$25M1.2%+22.8%0.3 yr
MASIMasimo Corporation$25M1.2%+6.8%0.3 yr
ANSCAgriculture & Natural So$23M1.1%+5.8%2.3 yr

Portfolio composition (YoY)

Industry mix
Unknown22.2%+0.9pp$459M
Shell Companies15.5%+9.2pp$319M
Electronic Gaming & Multimedia7.2%$148M
Railroads7.0%$144M
Entertainment7.0%$144M
Banks - Regional6.2%+4.3pp$127M
Asset Management5.8%+5.3pp$120M
Industrial - Machinery5.0%$103M
Software - Application3.8%+3.5pp$78M
Specialty Business Services3.1%$65M
Country
US72.0%-6.2pp
Unknown21.8%+0.6pp
KY2.3%+2.1pp
CA0.9%
MX0.7%
GB0.6%+0.3pp
HK0.5%
SG0.5%
Top 5: 32.2% · Top 10: 45.2% · Top 25: 60.4%

Winners

TickerPrev $PnLYoY %
ANSC$26M+0.00B5.8%
PRA$6M+0.00B5.9%

Losers

TickerPrev $PnLYoY %

Top buys this quarter · 15

WBS Webster Financial Corporationnew+$127M
UNF UniFirst Corporationnew+$65M
CWAN Clearwater Analytics Holdings,new+$62M
CTRA Coterra Energy Inc.new+$56M
WBD Warner Bros. Discovery, Inc.+$43M
NSC Norfolk Southern Corporation+$33M
EA Electronic Arts Inc.+$27M
PEN Penumbra, Inc.new+$25M
MASI Masimo Corporationnew+$25M
QRVO Qorvo, Inc.new+$20M

Top sells this quarter · 15

TECK Teck Resources Limitedexit$81M
EXAS Exact Sciences Corporationexit$78M
YCY AA Mission Acquisition Corp. Iexit$27M
CFLT Confluent, Inc.exit$27M
NGD New Gold Inc.exit$26M
TGNA TEGNA Inc.exit$24M
CTLP Cantaloupe, Inc.$10M
PACH Pioneer Acquisition I Corp.exit$9M
CSX CSX Corporationexit$8M
TASK TaskUs, Inc.exit$4M

Quarterly history (TTM returns)

PeriodAUM# PosReturn (1yr)SPY (1yr)Alpha (1yr)Flow
2026-03-31$2.07B297+22.01%+17.59%+4.41%-0.12B
2025-12-31$2.13B277+20.54%+17.72%+2.82%+0.06B
2025-09-30$1.93B246+8.47%+17.52%-9.04%+0.10B
2025-06-30$1.71B203+7.05%+14.94%-7.90%-0.05B
2025-03-31$1.69B160-4.83%+8.30%-13.14%-0.01B
2024-12-31$1.68B157-9.07%+24.89%-33.96%-0.37B
2024-09-30$2.12B178-4.08%+36.04%-40.12%-0.31B
2024-06-30$2.30B209-6.20%+24.49%-30.69%+0.21B
2024-03-31$2.27B223-13.71%+29.62%-43.34%-0.08B
2023-12-31$2.42B249-23.78%+26.18%-49.96%-0.50B
2023-09-30$2.87B283-28.46%+21.57%-50.02%-0.03B
2023-06-30$2.82B302-32.79%+19.42%-52.21%+0.19B
2023-03-31$3.09B346-25.51%-7.82%-17.69%+0.15B
2022-12-31$3.44B432-4.42%+7.56%-11.98%-0.85B
2022-09-30$4.48B528-3.25%-4.93%+1.68%+1.38B
2022-06-30$3.21B417-5.87%-16.11%+10.24%+0.24B