Water Island Capital LLC Portfolio Holdings

Water Island Capital LLC

  • $584 Million
  • Q3 2025

Water Island Capital LLC has filed its 13F form on November 14, 2025 for Q3 2025 where it was disclosed a total value porftolio of $584 Million distributed in 84 stocks.

Among their holdings, we can observe that their the top five positions include companies like: Cyber Ark Software Ltd. with a value of $41.5M, Verint Systems Inc with a value of $39.2M, Norfolk Southern Corp with a value of $37.8M, Verona Pharma PLC with a value of $31M, and Avid Xchange Holdings, Inc. with a value of $28.7M.

Examining the 13F form we can see an increase of $78M in the current position value, from $506M to 584M.

Water Island Capital LLC is based out at New York, NY

Below you can find more details about Water Island Capital LLC portfolio as well as his latest detailed transactions.

Portfolio value $584 Million
Technology: $213 Million
Industrials: $95.9 Million
Healthcare: $71.6 Million
Communication Services: $65.7 Million
Financial Services: $53.9 Million
Consumer Cyclical: $39.6 Million
Utilities: $19.6 Million
Basic Materials: $11.9 Million
Other: $12.9 Million

Stock Holdings Table

Stock Market Cap. Holding Value (Reported) # of Shares. Last Trade Trade History
$19.9B
$41.5 Million 7.1% of portfolio
85,799
Q3 2025 New
$2.13B
$39.2 Million 6.72% of portfolio
1,202,967
Q3 2025 New
$65.7B
$37.8 Million 6.47% of portfolio
125,799
Q3 2025 New
$6.52B
$31 Million 5.3% of portfolio
290,182
Q3 2025 New
$1.98B
$28.7 Million 4.91% of portfolio
2,882,867
Q3 2025 Added 46.99%
$5.92B
$28.6 Million 4.89% of portfolio
1,149,598
Q3 2025 Added 42.59%
$1.63B
$27.4 Million 4.68% of portfolio
815,698
Q3 2025 New
$7.46B
$25.5 Million 4.36% of portfolio
127,171
Q3 2025 New
$4.44B
$24.9 Million 4.26% of portfolio
1,223,508
Q3 2025 New
$491M
$23 Million 3.94% of portfolio
1,351,588
Q3 2025 New
$6.8B
$20.7 Million 3.54% of portfolio
421,500
Q3 2025 New
$7.09B
$19.1 Million 3.28% of portfolio
300,677
Q3 2025 New
$3.57B
$18.8 Million 3.21% of portfolio
450,660
Q3 2025 Added 71.65%
$1.62B
$18.5 Million 3.17% of portfolio
930,234
Q3 2025 New
$2.38B
$18.1 Million 3.1% of portfolio
421,434
Q3 2025 New
$55.8B
$17.9 Million 3.06% of portfolio
88,590
Q3 2025 New
$2.32B
$14.9 Million 2.55% of portfolio
2,264,676
Q3 2025 New
$1.23B
$12.1 Million 2.06% of portfolio
1,555,942
Q3 2025 New
$9.88B
$11.9 Million 2.03% of portfolio
183,721
Q3 2025 New
$2.47B
$11.7 Million 2.0% of portfolio
99,363
Q3 2025 Added 0.14%
$1.05B
$11.3 Million 1.93% of portfolio
492,502
Q3 2025 New
$1.6B
$10.9 Million 1.86% of portfolio
1,071,160
Q3 2025 New
$21.4B
$9.21 Million 1.58% of portfolio
209,900
Q3 2025 New
$4.4B
$9.04 Million 1.55% of portfolio
96,000
Q3 2025 New
$455M
$8.04 Million 1.38% of portfolio
1,558,174
Q3 2025 New
$3.35B
$7.74 Million 1.32% of portfolio
278,420
Q3 2025 New
$1.44B
$6.27 Million 1.07% of portfolio
958,918
Q3 2025 New
$1.3B
$5.05 Million 0.86% of portfolio
210,461
Q3 2025 Reduced 61.55%
$1.43B
$4.84 Million 0.83% of portfolio
456,600
Q3 2025 New
$990M
$4.11 Million 0.7% of portfolio
762,138
Q3 2025 Reduced 20.36%
$3.61B
$2.68 Million 0.46% of portfolio
214,205
Q3 2025 New
$6.2B
$2.28 Million 0.39% of portfolio
35,810
Q3 2025 New
$9.63B
$1.76 Million 0.3% of portfolio
63,104
Q3 2025 Reduced 7.7%
$751M
$1.7 Million 0.29% of portfolio
160,907
Q3 2025 Reduced 82.97%
$1.43B
$1.63 Million 0.28% of portfolio
94,905
Q3 2025 New
$495M
$1.37 Million 0.23% of portfolio
72,353
Q3 2025 New
$853M
$1.22 Million 0.21% of portfolio
18,336
Q3 2025 New
$572M
$1.2 Million 0.21% of portfolio
86,175
Q3 2025 New
$1.15B
$845,000 0.14% of portfolio
58,605
Q3 2025 New
$3.76B
$838,000 0.14% of portfolio
14,303
Q3 2025 New
$426M
$609,000 0.1% of portfolio
42,897
Q3 2025 Reduced 27.71%
$231M
$502,000 0.09% of portfolio
40,282
Q3 2025 Added 116.88%
$273M
$540,000 0.09% of portfolio
142,979
Q3 2025 New
$404M
$452,000 0.08% of portfolio
65,542
Q3 2025 New
$202M
$445,000 0.08% of portfolio
16,595
Q3 2025 New
$287M
$378,000 0.06% of portfolio
54,317
Q3 2025 New
$595M
$305,000 0.05% of portfolio
22,464
Q3 2025 Added 13.94%
$185M
$181,000 0.03% of portfolio
72,772
Q3 2025 New
$162M
$64,000 0.01% of portfolio
10,372
Q3 2025 New

Summary

  • Portfolio
  • No. of Stocks 84
  • Current Value $584 Million
  • Prior Value $506 Million
  • Filing
  • Period Q3 2025
  • Filing Date November 14, 2025
  • Form Type 13F-HR
  • Activity in Q3 2025
  • New Purchases 48 stocks
  • Additional Purchases 7 stocks
  • Sold out of 0 stocks
  • Reduced holdings in 5 stocks
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