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
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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 | 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
PUT
WARNER BROS DIS...
|
|
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
CALL
STATE STR SPDR ...
|
|
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
PUT
ORGANON & CO
|
|
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
PUT
STATE STR SPDR ...
|
|
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
CALL
NUVALENT INC
|
|
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
PUT
NUVALENT INC
|
|
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
PUT
LIVERAMP HLDGS ...
|
|
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
CALL
QXO INC
|
|
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
PUT
APOGEE THERAPEU...
|
|
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