2026 Q1 Portfolio Activity
In 2026 Q1, Westchester Capital Management, LLC maintained a portfolio of 356 distinct positions. The most significant new addition was WEBSTER FINL CORP, now representing 5.77% of the total fund value. They heavily accumulated shares in WARNER BROS DISCOVERY INC, increasing the position by 1483.9%. Conversely, Westchester Capital Management, LLC completely exited their position in CYBERARK SOFTWARE LTD.
Position History
hover any row below to update
Loading…
Total Positions
356
Quarter
2026 Q1
Top Holding
EA (6.7%)
Top 10 Concentration
44.9%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 356
Westchester Capital Management, LLC Full Holdings List — 2026 Q1
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
EA
ELECTRONIC ARTS...
|
Communication Services | 6.70% | 5.10% |
#1
2
Prev: #3
|
7.2 |
—
|
131,132 | 22.1% |
P
S
|
725,293 | $147,865,485 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NSC
NORFOLK SOUTHN ...
|
Industrials | 6.52% | 4.70% |
#2
2
Prev: #4
|
6.6 |
—
|
114,042 | 29.4% |
P
S
|
501,638 | $143,970,106 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
WBD
WARNER BROS DIS...
|
Communication Services | 6.51% | 4.42% |
#3
2
Prev: #5
|
6.1 |
—
|
1,583,516 | 43.4% |
P
S
|
5,233,117 | $143,701,392 | 2010 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
WBS
WEBSTER FINL CO...
|
Financial Services | 5.77% | — |
#4
Prev: #—
|
6.3 |
—
|
1,833,149 | — |
NEW
|
1,833,149 | $127,257,204 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
GTLS
CHART INDS INC
|
Industrials | 4.65% | 4.30% |
#5
1
Prev: #6
|
3.4 |
—
|
no change | no change |
P
S
|
496,058 | $102,559,992 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SPY
PUT
STATE STR SPDR ...
|
PUT Option | 4.42% | 5.73% |
#6
4
Prev: #2
|
1.8 |
—
|
-50,000 | -25.0% |
P
S
|
150,000 | $97,551,000 | 2010 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
UNF
UNIFIRST CORP M...
|
Industrials | 2.95% | — |
#7
Prev: #—
|
4.7 |
—
|
258,466 | — |
NEW
|
258,466 | $65,027,462 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CWAN
CLEARWATER ANAL...
|
Technology | 2.80% | — |
#8
Prev: #—
|
4.6 |
—
|
2,617,694 | — |
NEW
|
2,617,694 | $61,908,464 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
CTRA
COTERRA ENERGY ...
|
Energy | 2.53% | — |
#9
Prev: #—
|
4.5 |
—
|
1,588,341 | — |
NEW
|
1,588,341 | $55,814,303 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
DBRG
DIGITALBRIDGE G...
|
Financial Services | 2.05% | — |
#10
Prev: #—
|
4.3 |
—
|
2,938,348 | — |
NEW
|
2,938,348 | $45,309,326 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SEE
SEALED AIR CORP...
|
Consumer Cyclical | 1.80% | 1.49% |
#11
4
Prev: #15
|
2.7 |
—
|
92,086 | 10.8% |
P
S
|
945,707 | $39,766,980 | 2017 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
PRA
PROASSURANCE CO...
|
Financial Services | 1.63% | 1.63% |
#12
1
Prev: #13
|
1.2 |
—
|
-150,503 | -9.4% |
P
S
|
1,455,041 | $35,968,614 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
HOLX
HOLOGIC INC
|
Healthcare | 1.56% | 1.00% |
#13
7
Prev: #20
|
3.1 |
—
|
135,570 | 42.4% |
P
S
|
455,304 | $34,416,429 | 2025 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
PEN
PENUMBRA INC
|
Healthcare | 1.14% | — |
#14
Prev: #—
|
4.0 |
—
|
76,630 | — |
NEW
|
76,630 | $25,162,994 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MASI
MASIMO CORP
|
Healthcare | 1.12% | — |
#15
Prev: #—
|
3.9 |
—
|
138,428 | — |
NEW
|
138,428 | $24,622,188 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ANSC
AGRICULTURE & N...
|
Financial Services | 1.04% | 0.92% |
#16
7
Prev: #23
|
0.9 |
—
|
80,091 | 4.1% |
P
S
|
2,044,768 | $23,064,983 | 2024 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
HYAC
HAYMAKER ACQUIS...
|
Financial Services | 1.01% | 0.93% |
#17
5
Prev: #22
|
1.4 |
—
|
no change | no change |
P
S
|
1,939,028 | $22,221,261 | 2023 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
AL
AIR LEASE CORP
|
Industrials | 0.98% | 0.90% |
#18
6
Prev: #24
|
1.4 |
—
|
no change | no change |
P
S
|
334,421 | $21,717,300 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
QRVO
QORVO INC
|
Technology | 0.93% | — |
#19
Prev: #—
|
3.9 |
—
|
263,895 | — |
NEW
|
263,895 | $20,425,473 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
DMAA
DRUGS MADE IN A...
|
Financial Services | 0.79% | 0.73% |
#20
6
Prev: #26
|
1.3 |
—
|
no change | no change |
P
S
|
1,669,000 | $17,524,500 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
OS
ONESTREAM INC
|
Technology | 0.74% | — |
#21
Prev: #—
|
3.8 |
—
|
677,498 | — |
NEW
|
677,498 | $16,259,952 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
SZZL
SIZZLE ACQUISIT...
|
Financial Services | 0.73% | 0.67% |
#22
5
Prev: #27
|
0.8 |
—
|
-2,983 | -0.2% |
P
S
|
1,561,745 | $16,023,504 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
KFII
K&F GROWTH ACQU...
|
Financial Services | 0.70% | 0.82% |
#23
2
Prev: #25
|
0.3 |
—
|
-408,732 | -21.7% |
P
S
|
1,476,268 | $15,412,238 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
GLOBA TERRA ACQ...
|
|
Unknown | 0.66% | 0.60% |
#24
6
Prev: #30
|
1.3 |
—
|
no change | no change |
P
S
|
1,414,429 | $14,497,898 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
TITAN ACQUISITI...
|
|
Unknown | 0.63% | 0.58% |
#25
8
Prev: #33
|
1.3 |
—
|
no change | no change |
P
S
|
1,344,693 | $13,890,678 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
GIGCAPITAL8 COR...
|
|
Unknown | 0.60% | 0.45% |
#26
20
Prev: #46
|
2.7 |
—
|
250,000 | 23.1% |
P
S
|
1,330,000 | $13,260,100 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
OYSTER ENTERPRI...
|
|
Unknown | 0.60% | 0.55% |
#27
10
Prev: #37
|
1.2 |
—
|
no change | no change |
P
S
|
1,295,112 | $13,236,045 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
KOCHAV DEFENSE ...
|
|
Unknown | 0.60% | 0.55% |
#28
11
Prev: #39
|
1.2 |
—
|
no change | no change |
P
S
|
1,286,000 | $13,181,500 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
SOUL
SOULPOWER ACQUI...
|
Financial Services | 0.59% | 0.55% |
#29
11
Prev: #40
|
1.2 |
—
|
no change | no change |
P
S
|
1,279,300 | $13,112,826 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
SIDDHI ACQUISIT...
|
|
Unknown | 0.59% | 0.58% |
#30
2
Prev: #32
|
0.7 |
—
|
-100,000 | -7.4% |
P
S
|
1,249,197 | $12,966,666 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
PIONEER ACQUISI...
|
|
Unknown | 0.58% | 0.17% |
#31
70
Prev: #101
|
3.2 |
—
|
850,000 | 208.0% |
P
S
|
1,258,612 | $12,787,497 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
JACS
JACKSON ACQUISI...
|
Financial Services | 0.57% | 0.52% |
#32
10
Prev: #42
|
1.2 |
—
|
no change | no change |
P
S
|
1,186,200 | $12,561,858 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ALDF
ALDEL FINL II I...
|
Financial Services | 0.56% | 0.51% |
#33
10
Prev: #43
|
1.2 |
—
|
no change | no change |
P
S
|
1,159,448 | $12,255,365 | 2024 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
JHG
JANUS HENDERSON...
|
Financial Services | 0.54% | — |
#34
Prev: #—
|
3.7 |
—
|
230,719 | — |
NEW
|
230,719 | $11,852,036 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
POLE
ANDRETTI ACQUIS...
|
Financial Services | 0.54% | 0.49% |
#35
9
Prev: #44
|
1.2 |
—
|
no change | no change |
P
S
|
1,111,416 | $11,842,138 | 2024 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
NEW PROVIDENCE ...
|
|
Unknown | 0.52% | 0.55% |
#36
Prev: #36
|
0.7 |
—
|
-150,000 | -11.7% |
P
S
|
1,128,999 | $11,583,529 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
N/A
OXLEY BRIDGE AC...
|
|
Unknown | 0.51% | 0.39% |
#37
20
Prev: #57
|
2.7 |
—
|
200,000 | 21.8% |
P
S
|
1,117,657 | $11,321,865 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
VACH
VOYAGER ACQUISI...
|
Financial Services | 0.47% | 0.57% |
#38
4
Prev: #34
|
0.2 |
—
|
-300,000 | -23.8% |
P
S
|
961,894 | $10,301,885 | 2024 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
AACB
ARTIUS II ACQUI...
|
Financial Services | 0.47% | 0.43% |
#39
9
Prev: #48
|
1.2 |
—
|
no change | no change |
P
S
|
995,939 | $10,288,050 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
CAL REDWOOD ACQ...
|
|
Unknown | 0.46% | 0.28% |
#40
33
Prev: #73
|
3.2 |
—
|
350,000 | 53.8% |
P
S
|
1,000,000 | $10,150,000 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
LPBB
LAUNCH TWO ACQU...
|
Financial Services | 0.46% | 0.42% |
#41
9
Prev: #50
|
1.2 |
—
|
no change | no change |
P
S
|
950,000 | $10,089,000 | 2024 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
APEX TREAS CORP
|
|
Unknown | 0.45% | 0.21% |
#42
47
Prev: #89
|
3.2 |
—
|
500,000 | 100.0% |
P
S
|
1,000,000 | $9,990,000 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
PLMK
PLUM ACQUISITIO...
|
Financial Services | 0.44% | 0.54% |
#43
2
Prev: #41
|
0.2 |
—
|
-303,900 | -24.8% |
P
S
|
921,100 | $9,726,816 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
ATII
ARCHIMEDES TECH...
|
Financial Services | 0.43% | 0.39% |
#44
9
Prev: #53
|
1.2 |
—
|
no change | no change |
P
S
|
907,144 | $9,443,369 | 2025 Q2 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
NTWO
NEWBURY STR II ...
|
Financial Services | 0.43% | 0.39% |
#45
9
Prev: #54
|
1.2 |
—
|
no change | no change |
P
S
|
898,111 | $9,439,147 | 2024 Q4 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
MLAC
MOUNTAIN LAKE A...
|
Unknown | 0.42% | 0.39% |
#46
10
Prev: #56
|
1.2 |
—
|
no change | no change |
P
S
|
887,700 | $9,347,482 | 2025 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
GPAT
GP-ACT III ACQU...
|
Financial Services | 0.42% | 0.61% |
#47
18
Prev: #29
|
0.2 |
—
|
-500,000 | -36.7% |
P
S
|
860,852 | $9,331,636 | 2024 Q3 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
JENA ACQUISITIO...
|
|
Unknown | 0.42% | 0.39% |
#48
7
Prev: #55
|
1.2 |
—
|
no change | no change |
P
S
|
912,000 | $9,320,641 | — | 13F Filing | 2026-03-31 | 2026-05-15 | ||
|
APLS
APELLIS PHARMAC...
|
Healthcare | 0.41% | — |
#49
Prev: #—
|
3.7 |
—
|
227,489 | — |
NEW
|
227,489 | $9,151,882 | 2026 Q1 | 13F Filing | 2026-03-31 | 2026-05-15 | |||
|
N/A
GSR IV ACQUISIT...
|
|
Unknown | 0.41% | — |
#50
Prev: #—
|
3.7 |
—
|
900,000 | — |
NEW
|
900,000 | $9,027,000 | — | 13F Filing | 2026-03-31 | 2026-05-15 |
Showing 1-50 of 356 holdings