WATER ISLAND CAPITAL LLC — 13F Holdings

2026 Q2  ·  142 Positions

2026 Q2 Portfolio Activity

In 2026 Q2, WATER ISLAND CAPITAL LLC maintained a portfolio of 142 distinct positions. The most significant new addition was TAYLOR MORRISON HOME CORP, now representing 4.85% of the total fund value. They heavily accumulated shares in WARNER BROS DISCOVERY INC, increasing the position by 52.5%. Conversely, WATER ISLAND CAPITAL LLC completely exited their position in HOLOGIC INC.
Position History hover any row below to update
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WATER ISLAND CAPITAL LLC New York, NY Hedge Fund / Alternative Asset Manager AUM $902M
PCA Score Concentration Risk
Risk ENB
Total Positions
142
Quarter
2026 Q2
Top Holding
TMHC (4.9%)
Top 10 Concentration
43.0%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 142

WATER ISLAND CAPITAL LLC Full Holdings List — 2026 Q2

Stock History Sector / Type Port % Prev % Rank / Prev Conviction
Freshness
Change % Change Influence Shares Mkt Value Avg Cost Price Held 1st Owned Source Source Date Date Reported
TMHC
TAYLOR MORRISON...
Consumer Cyclical 4.85% #1
Prev: #—
7.4
727,492
NEW
727,492 $52,190,277 2026 Q2 13F Filing 2026-06-30 2026-08-14
EA
ELECTRONIC ARTS...
Communication Services 4.82% 5.69% #2 1
Prev: #1
3.9
3,044 1.2%
P
S
252,932 $51,861,177 2025 Q3 13F Filing 2026-06-30 2026-08-14
GTLS
CHART INDS INC
Industrials 4.62% 4.38% #3 4
Prev: #7
5.3
47,660 25.1%
P
S
237,599 $49,643,936 2025 Q3 13F Filing 2026-06-30 2026-08-14
PEN
PENUMBRA INC
Healthcare 4.42% 4.40% #4 2
Prev: #6
4.8
30,361 25.3%
P
S
150,456 $47,506,483 2026 Q1 13F Filing 2026-06-30 2026-08-14
WBD
WARNER BROS DIS...
Communication Services 4.32% 4.96% #5 2
Prev: #3
4.2
123,448 7.6%
P
S
1,740,468 $46,400,878 2017 Q4 13F Filing 2026-06-30 2026-08-14
JHG
JANUS HENDERSON...
Financial Services 4.31% 5.29% #6 4
Prev: #2
2.2
-31,361 -3.4%
P
S
890,916 $46,327,632 2025 Q4 13F Filing 2026-06-30 2026-08-14
NSC
NORFOLK SOUTHN ...
Industrials 4.28% 4.30% #7 1
Prev: #8
3.7
12,232 9.1%
P
S
146,283 $46,019,168 2017 Q1 13F Filing 2026-06-30 2026-08-14
TXNM
TXNM ENERGY INC
Utilities 3.90% 4.40% #8 3
Prev: #5
3.6
62,867 9.3%
P
S
737,734 $41,888,537 2020 Q4 13F Filing 2026-06-30 2026-08-14
N/A
WARNER BROS DIS...
PUT
PUT Option 3.78% 3.22% #9 3
Prev: #12
4.0
475,700 45.3%
P
S
1,525,200 $40,661,832 13F Filing 2026-06-30 2026-08-14
CZR
CAESARS ENTERTA...
Consumer Cyclical 3.69% 0.09% #10 68
Prev: #78
4.5
1,283,574 4351.1%
P
S
1,313,074 $39,628,573 2004 Q3 13F Filing 2026-06-30 2026-08-14
N/A
STATE STR SPDR ...
CALL
CALL Option 3.13% #11
Prev: #—
4.8
45,000
NEW
45,000 $33,604,650 13F Filing 2026-06-30 2026-08-14
WBS
WEBSTER FINL CO...
Financial Services 3.11% 3.22% #12 1
Prev: #11
3.2
21,387 5.1%
P
S
437,210 $33,411,589 2026 Q1 13F Filing 2026-06-30 2026-08-14
NSA
NATIONAL STORAG...
Real Estate 3.01% 2.43% #13 1
Prev: #14
3.7
152,230 26.4%
P
S
728,454 $32,394,350 2026 Q1 13F Filing 2026-06-30 2026-08-14
SLAB
SILICON LABORAT...
Technology 3.01% 1.36% #14 8
Prev: #22
4.2
89,721 153.6%
P
S
148,138 $32,377,041 2026 Q1 13F Filing 2026-06-30 2026-08-14
RAMP
LIVERAMP HLDGS ...
Technology 2.82% #15
Prev: #—
4.6
805,327
NEW
805,327 $30,312,508 2019 Q1 13F Filing 2026-06-30 2026-08-14
CPRX
CATALYST PHARMA...
Healthcare 2.73% #16
Prev: #—
4.6
933,819
NEW
933,819 $29,349,931 2026 Q2 13F Filing 2026-06-30 2026-08-14
D
DOMINION ENERGY...
Utilities 2.42% #17
Prev: #—
4.5
381,231
NEW
381,231 $26,034,265 2026 Q2 13F Filing 2026-06-30 2026-08-14
ACA
ARCOSA INC
Industrials 2.35% #18
Prev: #—
4.4
173,589
NEW
173,589 $25,220,746 2026 Q2 13F Filing 2026-06-30 2026-08-14
TECH
BIO-TECHNE CORP
Healthcare 2.21% #19
Prev: #—
4.4
335,727
NEW
335,727 $23,719,113 2026 Q2 13F Filing 2026-06-30 2026-08-14
WSR
WHITESTONE REIT
Real Estate 2.17% #20
Prev: #—
4.4
1,227,709
NEW
1,227,709 $23,277,363 2026 Q2 13F Filing 2026-06-30 2026-08-14
ROKU
ROKU INC
Communication Services 2.12% #21
Prev: #—
4.3
164,890
NEW
164,890 $22,777,905 2026 Q2 13F Filing 2026-06-30 2026-08-14
BLD
TOPBUILD COR
Industrials 2.03% #22
Prev: #—
4.3
51,251
NEW
51,251 $21,840,926 2026 Q2 13F Filing 2026-06-30 2026-08-14
DBRG
DIGITALBRIDGE G...
Financial Services 2.02% 2.24% #23 5
Prev: #18
2.8
77,329 6.0%
P
S
1,376,380 $21,719,276 2025 Q4 13F Filing 2026-06-30 2026-08-14
AVNS
AVANOS MED INC
Healthcare 1.85% #24
Prev: #—
4.2
799,002
NEW
799,002 $19,879,170 2026 Q2 13F Filing 2026-06-30 2026-08-14
SILA
SILA REALTY TRU...
Real Estate 1.76% #25
Prev: #—
4.2
623,872
NEW
623,872 $18,940,753 2026 Q2 13F Filing 2026-06-30 2026-08-14
OGN
ORGANON & CO
Healthcare 1.73% #26
Prev: #—
4.2
1,374,899
NEW
1,374,899 $18,616,133 2026 Q2 13F Filing 2026-06-30 2026-08-14
STEL
STELLAR BANCORP...
Financial Services 1.40% 1.76% #27 7
Prev: #20
1.1
-48,004 -11.1%
P
S
383,227 $15,068,486 2026 Q1 13F Filing 2026-06-30 2026-08-14
N/A
ORGANON & CO
PUT
PUT Option 1.23% #28
Prev: #—
4.0
974,200
NEW
974,200 $13,190,668 13F Filing 2026-06-30 2026-08-14
NUVL
NUVALENT INC
Healthcare 1.19% #29
Prev: #—
4.0
103,979
NEW
103,979 $12,841,407 2026 Q2 13F Filing 2026-06-30 2026-08-14
APGE
APOGEE THERAPEU...
Healthcare 1.17% #30
Prev: #—
4.0
94,900
NEW
94,900 $12,596,077 2026 Q2 13F Filing 2026-06-30 2026-08-14
N/A
STATE STR SPDR ...
PUT
PUT Option 1.04% #31
Prev: #—
3.9
15,000
NEW
15,000 $11,201,550 13F Filing 2026-06-30 2026-08-14
N/A
NUVALENT INC
CALL
CALL Option 0.96% #33
Prev: #—
3.9
84,000
NEW
84,000 $10,374,000 13F Filing 2026-06-30 2026-08-14
N/A
NUVALENT INC
PUT
PUT Option 0.96% #32
Prev: #—
3.9
84,000
NEW
84,000 $10,374,000 13F Filing 2026-06-30 2026-08-14
XOMA
XOMA ROYALTY CO...
Healthcare 0.96% #34
Prev: #—
3.9
242,000
NEW
242,000 $10,285,000 2026 Q2 13F Filing 2026-06-30 2026-08-14
N/A
TXNM ENERGY INC
Bond/Debt 0.73% 0.90% #35 2
Prev: #33
1.3
no change no change
P
S
6,000,000 $7,845,792 13F Filing 2026-06-30 2026-08-14
N/A
RAPID7 INC
Bond/Debt 0.73% 0.54% #36 4
Prev: #40
3.3
3,000,000 54.5%
P
S
8,501,530 $7,831,156 13F Filing 2026-06-30 2026-08-14
KVUE
KENVUE INC
Consumer Defensive 0.71% 1.35% #37 14
Prev: #23
0.3
-298,558 -42.6%
P
S
402,042 $7,683,023 2025 Q4 13F Filing 2026-06-30 2026-08-14
N/A
VARONIS SYS INC
Bond/Debt 0.45% 0.29% #38 11
Prev: #49
3.2
2,000,000 66.7%
P
S
5,000,000 $4,852,083 13F Filing 2026-06-30 2026-08-14
N/A
BENTLEY SYS INC
Bond/Debt 0.45% 0.53% #39 5
Prev: #44
1.2
no change no change
P
S
5,000,000 $4,803,323 13F Filing 2026-06-30 2026-08-14
N/A
ETSY INC
Bond/Debt 0.44% #40
Prev: #—
3.7
5,000,000
NEW
5,000,000 $4,734,433 13F Filing 2026-06-30 2026-08-14
N/A
LIVERAMP HLDGS ...
PUT
PUT Option 0.41% #41
Prev: #—
3.7
117,100
NEW
117,100 $4,407,644 13F Filing 2026-06-30 2026-08-14
N/A
ALPHABET INC
Preferred 0.40% #42
Prev: #—
3.7
85,000
NEW
85,000 $4,325,650 13F Filing 2026-06-30 2026-08-14
N/A
REDFIN CORP
Bond/Debt 0.40% 0.48% #43 3
Prev: #46
1.2
no change no change
P
S
4,500,000 $4,325,563 13F Filing 2026-06-30 2026-08-14
N/A
SNAP INC
Bond/Debt 0.38% #44
Prev: #—
3.7
5,000,000
NEW
5,000,000 $4,071,597 13F Filing 2026-06-30 2026-08-14
N/A
QXO INC
CALL
CALL Option 0.32% #45
Prev: #—
3.6
200,000
NEW
200,000 $3,456,000 13F Filing 2026-06-30 2026-08-14
AXTA
AXALTA COATING ...
Basic Materials 0.31% 0.64% #46 8
Prev: #38
0.1
-109,402 -52.9%
P
S
97,500 $3,336,450 2015 Q2 13F Filing 2026-06-30 2026-08-14
GSAT
GLOBALSTAR INC
Communication Services 0.23% #47
Prev: #—
3.6
30,668
NEW
30,668 $2,493,002 2026 Q2 13F Filing 2026-06-30 2026-08-14
AES
AES CORP
Utilities 0.23% 0.29% #48
Prev: #48
0.6
-18,263 -9.8%
P
S
167,570 $2,456,576 2026 Q1 13F Filing 2026-06-30 2026-08-14
UNF
UNIFIRST CORP M...
Industrials 0.22% 0.72% #49 13
Prev: #36
0.1
-16,698 -64.9%
P
S
9,045 $2,392,041 2026 Q1 13F Filing 2026-06-30 2026-08-14
N/A
APOGEE THERAPEU...
PUT
PUT Option 0.22% #50
Prev: #—
3.6
17,500
NEW
17,500 $2,322,775 13F Filing 2026-06-30 2026-08-14
Showing 1-50 of 142 holdings

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