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Water Island Capital

Latest statistics and disclosures from Water Island Capital's latest quarterly 13F-HR filing:

Top 5 stock holdings are EA, JHG, WBD, Hologic, TXNM, and represent 25.07% of Water Island Capital's stock portfolio.
Added to shares of these 10 stocks: PEN (+$39M), MASI (+$35M), Electronic Arts Inc option (+$31M), WBS (+$29M), Warner Bros Discovery (+$26M), TPH (+$25M), NSA (+$22M), Great Lakes Dredge & Dock Corporation (+$22M), ACLX (+$21M), DAWN (+$20M).
Started 59 new stock positions in PEN, AMRX, EL, ALK, SLAB, SNCY, WBS, PKST, Apellis Pharmaceuticals Inc put, SKYT.
Reduced shares in these 10 stocks: CYBR (-$39M), , Comerica Incorporated (-$35M), CDTX (-$33M), AVDL (-$23M), Tegna (-$23M), AHL (-$21M), Sealed Air (-$21M), SNV (-$20M), Confluent (-$19M).
Sold out of its positions in ALEX, Amicus Therapeutics, Astria Therapeutics, Avidity Biosciences Ord, Avidity Biosciences, Blackline, BA.PA, Cadence Bank, Ceridian Hcm Hldg, CDTX.
Water Island Capital was a net seller of stock by $-32M.
Water Island Capital has $896M in assets under management (AUM), dropping by -3.45%.
Central Index Key (CIK): 0001222765

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Portfolio Holdings for Water Island Capital

Water Island Capital holds 98 positions in its portfolio as reported in the March 2026 quarterly 13F filing

Company (Ticker)	Portfolio Weight	Valued At	Change in Shares	Share Count	Share Price
Electronic Arts Equity (EA)	5.7	$51M	+38%	250k	203.87	View chart
Janus Henderson Group Equity (JHG)	5.3	$47M	+42%	922k	51.37	View chart
Warner Bros Discovery Equity (WBD)	5.0	$44M	+41%	1.6M	27.46	View chart
Hologic Equity	4.7	$42M	+19%	560k	75.59	View chart
Txnm Energy Equity (TXNM)	4.4	$40M	+17%	675k	58.46	View chart
Penumbra Equity (PEN)	4.4	$39M	NEW	120k	328.37	View chart
Chart Inds Equity (GTLS)	4.4	$39M		190k	206.75	View chart
Norfolk Southn Corp Equity (NSC)	4.3	$39M	+3%	134k	287.00	View chart
Masimo Corp Equity (MASI)	3.9	$35M	NEW	194k	177.87	View chart
Electronic Arts Equity Put Put Option	3.4	$31M	NEW	150k	203.87	View chart
Webster Finl Corp Equity (WBS)	3.2	$29M	NEW	416k	69.42	View chart
Warner Bros Discovery Equity Put Put Option	3.2	$29M	+1005%	1.0M	27.46	View chart
Tri Pointe Homes Equity (TPH)	2.8	$25M	NEW	536k	46.73	View chart
National Storage Affiliates Equity (NSA)	2.4	$22M	NEW	576k	37.74	View chart
Great Lakes Dredge & Dock Equity	2.4	$22M	NEW	1.3M	17.00	View chart
Arcellx Equity (ACLX)	2.4	$21M	NEW	183k	114.82	View chart
Day One Biopharmaceuticals I Equity (DAWN)	2.3	$20M	NEW	944k	21.44	View chart
Digitalbridge Group Equity (DBRG)	2.2	$20M	+39%	1.3M	15.42	View chart
Day One Biopharmaceuticals I Equity Put Put Option	2.0	$18M	NEW	840k	21.44	View chart
Stellar Bancorp Equity (STEL)	1.8	$16M	NEW	431k	36.61	View chart
Enhabit Equity (EHAB)	1.5	$14M	NEW	985k	14.09	View chart
Silicon Laboratories Equity (SLAB)	1.4	$12M	NEW	58k	208.15	View chart
Kenvue Equity (KVUE)	1.3	$12M		701k	17.24	View chart
Kenvue Equity Put Put Option	1.3	$12M		701k	17.24	View chart
Veris Residential Equity (VRE)	1.3	$11M	NEW	597k	18.87	View chart
Peakstone Realty Trust Equity (PKST)	1.2	$11M	NEW	504k	20.89	View chart
Terns Pharmaceuticals Equity (TERN)	1.1	$9.9M	NEW	189k	52.72	View chart
Terns Pharmaceuticals Equity Put Put Option	1.1	$9.9M	NEW	189k	52.72	View chart
Silicon Laboratories Equity Put Put Option	1.1	$9.9M	NEW	48k	208.15	View chart
Kennedy-wilson Holdings Equity (KW)	1.0	$8.9M	NEW	826k	10.82	View chart
Zim Integrated Shipping Serv Equity (ZIM)	1.0	$8.7M	NEW	332k	26.35	View chart
Zim Integrated Shipping Serv Equity Put Put Option	1.0	$8.7M	NEW	332k	26.35	View chart
Txnm Energy Convertible Bond (Principal)	0.9	$8.1M	+100%	6.0M	1.35	View chart
Janus Henderson Group Equity Put Put Option	0.9	$7.9M	+1185%	154k	51.37	View chart
Banco Santander Sa Equity Call Call Option	0.9	$7.7M	NEW	682k	11.28	View chart
Unifirst Corp Mass Equity (UNF)	0.7	$6.5M	NEW	26k	251.59	View chart
Csg Sys Intl Convertible Bond (Principal)	0.7	$6.1M		5.0M	1.22	View chart
Axalta Coating Sys Equity (AXTA)	0.6	$5.7M		207k	27.70	View chart
Axalta Coating Sys Equity Put Put Option	0.6	$5.4M	+190%	195k	27.70	View chart
Rapid7 Convertible Bond (Principal)	0.5	$4.9M		5.5M	0.88	View chart
Apellis Pharmaceuticals Equity (APLS)	0.5	$4.8M	NEW	121k	40.23	View chart
Apellis Pharmaceuticals Equity Put Put Option	0.5	$4.8M	NEW	121k	40.23	View chart
Air Lease Corp Equity	0.5	$4.7M	-75%	73k	64.94	View chart
Bentley Sys Convertible Bond (Principal)	0.5	$4.7M		5.0M	0.95	View chart
Nutanix Convertible Bond (Principal)	0.5	$4.5M	+42%	5.0M	0.90	View chart
Redfin Corp Convertible Bond (Principal)	0.5	$4.3M		4.5M	0.96	View chart
Halozyme Therapeutics Convertible Bond (Principal)	0.3	$3.1M		3.0M	1.04	View chart
Aes Corp Equity (AES)	0.3	$2.6M	NEW	186k	14.09	View chart
Varonis Sys Convertible Bond (Principal)	0.3	$2.6M		3.0M	0.87	View chart
Clearwater Analytics Hldgs I Equity (CWAN)	0.3	$2.6M	-87%	110k	23.65	View chart
Sealed Air Corp Equity	0.3	$2.4M	-89%	56k	42.05	View chart
Allied Gold Corp Equity (AAUC)	0.3	$2.3M	NEW	73k	30.99	View chart
Onestream Equity	0.2	$2.2M	NEW	91k	24.00	View chart
Brighthouse Finl Equity (BHF)	0.2	$2.0M	+16%	34k	59.88	View chart
Ncr Atleos Corporation Equity (NATL)	0.2	$1.7M	NEW	39k	43.58	View chart
Select Med Hldgs Corp Equity (SEM)	0.2	$1.7M	NEW	104k	16.29	View chart
Thermon Group Hldgs Equity (THR)	0.2	$1.7M	NEW	33k	50.40	View chart
Sun Ctry Airls Hldgs Equity (SNCY)	0.2	$1.6M	NEW	99k	16.52	View chart
Centessa Pharmaceuticals Equity (CNTA)	0.2	$1.6M	NEW	41k	39.72	View chart
Centessa Pharmaceuticals Equity Put Put Option	0.2	$1.6M	NEW	41k	39.72	View chart
Csg Sys Intl Equity (CSGS)	0.2	$1.6M	-86%	20k	79.94	View chart
Semrush Hldgs Equity (SEMR)	0.2	$1.6M	-78%	134k	11.94	View chart
Amicus Therapeutic Equity (FOLD)	0.2	$1.5M	-85%	104k	14.46	View chart
Boeing Equity (BA)	0.2	$1.4M	NEW	7.2k	199.03	View chart
Sunopta Equity (STKL)	0.1	$1.3M	NEW	197k	6.48	View chart
Proassurance Corp Equity (PRA)	0.1	$1.3M	+8%	51k	24.72	View chart
Cantaloupe Equity (CTLP)	0.1	$1.2M	-18%	108k	10.81	View chart
Clear Channel Outdoor Hldgs Equity (CCO)	0.1	$1.1M	NEW	479k	2.37	View chart
Ihs Holding Equity (IHS)	0.1	$1.1M	NEW	138k	8.23	View chart
Talkspace Equity (TALK)	0.1	$1.1M	NEW	216k	5.17	View chart
Mister Car Wash Equity (MCW)	0.1	$1.1M	NEW	157k	6.97	View chart
Dicks Sporting Goods Equity (DKS)	0.1	$1.1M	+386%	5.3k	198.29	View chart
Gladstone Cap Corp Convertible Bond (Principal)	0.1	$968k	-50%	1.0M	0.97	View chart
Coterra Energy Equity (CTRA)	0.1	$959k	NEW	27k	35.14	View chart
Skywater Technology Equity (SKYT)	0.1	$947k	NEW	35k	27.41	View chart
Northwestern Energy Group In Equity (NWE)	0.1	$913k	-3%	14k	65.94	View chart
Amneal Pharmaceuticals Equity (AMRX)	0.1	$850k	NEW	68k	12.43	View chart
Caesars Entertainment Inc Ne Equity (CZR)	0.1	$780k	NEW	30k	26.43	View chart
Udemy Equity (UDMY)	0.1	$644k	+2%	139k	4.62	View chart
Lauder Estee Cos Equity (EL)	0.1	$538k	NEW	7.5k	71.77	View chart
Penn Entertainment Equity (PENN)	0.1	$526k	NEW	35k	15.03	View chart
Calavo Growers Equity (CVGW)	0.1	$524k	NEW	20k	25.79	View chart
International Money Express Equity (IMXI)	0.1	$523k	-62%	33k	15.80	View chart
Nathans Famous Equity (NATH)	0.1	$503k	NEW	5.0k	100.73	View chart
On24 Equity	0.1	$489k	NEW	60k	8.10	View chart
Heritage Comm Corp Equity (HTBK)	0.1	$474k	+11%	38k	12.48	View chart
Blue Foundry Bancorp Equity	0.1	$472k	NEW	36k	13.24	View chart
Echostar Corp Equity (SATS)	0.1	$468k	NEW	4.0k	117.07	View chart
Flushing Finl Corp Equity (FFIC)	0.1	$463k	NEW	30k	15.36	View chart
United Airls Hldgs Equity (UAL)	0.1	$460k	NEW	5.0k	92.07	View chart
Diamond Hill Invt Group Equity (DHIL)	0.0	$434k		2.5k	172.10	View chart
First Fndtn Equity	0.0	$399k	+2%	68k	5.90	View chart
Alaska Air Group Equity (ALK)	0.0	$378k	NEW	10k	36.78	View chart
Pacific Biosciences Calif In Equity (PACB)	0.0	$359k	NEW	272k	1.32	View chart
Victory Cap Hldgs Inc Del Equity (VCTR)	0.0	$335k	NEW	5.1k	65.48	View chart
Viking Therapeutics Equity (VKTX)	0.0	$335k	NEW	10k	32.54	View chart
United Parcel Svcs Equity (UPS)	0.0	$248k	NEW	2.5k	98.38	View chart
Paypal Hldgs Equity (PYPL)	0.0	$232k	NEW	5.1k	45.23	View chart

Past Filings by Water Island Capital

SEC 13F filings are viewable for Water Island Capital going back to 2011

Water Island Capital 2026 Q1 filed May 15, 2026
Water Island Capital 2025 Q4 filed Feb. 17, 2026
Water Island Capital 2025 Q3 filed Nov. 14, 2025
Water Island Capital 2025 Q2 filed Aug. 14, 2025
Water Island Capital 2025 Q1 filed May 15, 2025
Water Island Capital 2024 Q4 filed Feb. 13, 2025
Water Island Capital 2023 Q2 restated filed Nov. 14, 2024
Water Island Capital 2023 Q3 restated filed Nov. 14, 2024
Water Island Capital 2023 Q4 restated filed Nov. 14, 2024
Water Island Capital 2024 Q1 restated filed Nov. 14, 2024
Water Island Capital 2024 Q2 restated filed Nov. 14, 2024
Water Island Capital 2022 Q4 restated filed Nov. 14, 2024
Water Island Capital 2023 Q1 restated filed Nov. 14, 2024
Water Island Capital 2024 Q2 filed Aug. 15, 2024
Water Island Capital 2024 Q1 filed May 15, 2024
Water Island Capital 2023 Q3 filed Nov. 14, 2023

View all past filings

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