§ 13F · FUND PROFILE
WATER ISLAND CAPITAL LLC.
Institutional filer · behavioral pattern: Other. Summary pending.
AUM · $793M (13F)Positions · 84Turnover · — · Q1Filed · May 15, 2026
CONCENTRATION
—
Top 10 holdings
NEW BUYS
0
+$439M deployed
EXITS
0
No exits
SECTOR SHIFT
—
No prior quarter data
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q1 2026
FILED MAY 15, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q1 |
|---|---|---|---|---|---|---|
| 1 | EA | ELECTRONIC ARTS INC | 250K | $51M | 5.7% | +38% |
| 2 | JHG | JANUS HENDERSON GROUP PLC | 922K | $47M | 5.3% | +42% |
| 3 | WBD | WARNER BROS DISCOVERY INC | 1.62M | $44M | 5.0% | +42% |
| 4 | HOLX | HOLOGIC INC | 560K | $42M | 4.7% | +20% |
| 5 | TXNM | TXNM ENERGY INC | 675K | $39M | 4.4% | +17% |
| 6 | PEN | PENUMBRA INC | 120K | $39M | 4.4% | NEW |
| 7 | GTLS | CHART INDS INC | 190K | $39M | 4.4% | +1% |
| 8 | NSC | NORFOLK SOUTHN CORP | 134K | $38M | 4.3% | +4% |
| 9 | MASI | MASIMO CORP | 194K | $35M | 3.9% | NEW |
| 10 | EA | ELECTRONIC ARTS INC | 150K | $31M | 3.4% | NEW |
§ 02 · SECTOR ALLOCATION
Where the money is
Sector data pending
§ 03 · THE WATER SIGNAL
AC read
WATER ISLAND CAPITAL LLC is a Other fund managing $793 million in assets. The fund runs a portfolio of 84 positions.
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
2 FILINGS
Q1 2026
Steady book
+0 buys · −0 exits · 0 changed
Q4 2025
Steady book
+0 buys · −0 exits · 0 changed
Q3 2025
Steady book
+0 buys · −0 exits · 0 changed