Water Island Capital’s Hologic HOLX Stock Holding History

Water Island Capital’s Portfolio HOLX Stock Details HOLX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-60,600	Closed	-$4.51M	–	119
2025 Q4	$4.51M	Buy	+60,600	New	+$4.43M	0.49%	50

Other funds holding HOLX

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

HBK Investments Dallas, Texas $9.85B AUM 55.6% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Fidelity International Hamilton, Bermuda $129B AUM 30.83% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return

Water Island Capital's HOLX Position: Q1 2026 in Review

Water Island Capital increased its Hologic (HOLX) stake by 20% in Q1 2026, buying an estimated $6.94M and bringing the position to 560,045 shares worth $42.3M. The position accounts for 4.73% of the portfolio, ranked #4.

Water Island Capital first reported a position in HOLX in Q4 2025 and has held it in 2 quarters since. 704 funds tracked by Wall St. Rank hold HOLX as of Q1 2026.

Water Island Capital held 560,045 shares of Hologic worth $42.3M as of Q1 2026.
Water Island Capital bought 92,303 Hologic shares in Q1 2026, an estimated $6.94M.
Hologic made up 4.73% of Water Island Capital's portfolio in Q1 2026, its #4 holding.
Water Island Capital first reported a position in Hologic in Q4 2025 and has held it in 2 quarters since.
704 funds tracked by Wall St. Rank held Hologic as of Q1 2026.

Based on Water Island Capital's 13F filing for Q1 2026, filed 15 May 2026.