Water Island Capital’s Avidity Biosciences RNAM Stock Holding History

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

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-168,385	Closed	-$12.1M	–	131
2025 Q4	$12.1M	Buy	+168,385	New	+$10.9M	1.31%	29

Other funds holding RNAM

Corsicana & Co Corsicana, Texas $206M AUM 26.42% 1-Year Est. Return

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

Water Island Capital sold out of Avidity Biosciences (RNAM) in Q1 2026, closing a stake of 168,385 shares — an estimated $12.1M sold.

Water Island Capital first reported a position in RNAM in Q4 2025 and held it in 1 quarter. The position peaked at $12.1M in Q4 2025. 1 fund tracked by Wall St. Rank holds RNAM as of Q1 2026.

Water Island Capital reported no remaining Avidity Biosciences position as of Q1 2026 after selling out during the quarter.
Water Island Capital sold 168,385 Avidity Biosciences shares in Q1 2026, an estimated $12.1M.
Water Island Capital first reported a position in Avidity Biosciences in Q4 2025 and held it in 1 quarter.
Water Island Capital's Avidity Biosciences position peaked at $12.1M in Q4 2025.
1 fund tracked by Wall St. Rank held Avidity Biosciences as of Q1 2026.

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