Westchester Capital Management (New York)’s Avidity Biosciences RNAM Stock Holding History

Westchester Capital Management (New York)’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	-962,659	Closed	-$69.4M	–	329
2025 Q4	$69.4M	Buy	+962,659	New	+$62.2M	2.92%	10

Other funds holding RNAM

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

Westchester Capital Management (New York)'s RNAM Position: Q1 2026 in Review

Westchester Capital Management (New York) sold out of Avidity Biosciences (RNAM) in Q1 2026, closing a stake of 962,659 shares — an estimated $69.4M sold.

Westchester Capital Management (New York) first reported a position in RNAM in Q4 2025 and held it in 1 quarter. The position peaked at $69.4M in Q4 2025. 1 fund tracked by Wall St. Rank holds RNAM as of Q1 2026.

Westchester Capital Management (New York) reported no remaining Avidity Biosciences position as of Q1 2026 after selling out during the quarter.
Westchester Capital Management (New York) sold 962,659 Avidity Biosciences shares in Q1 2026, an estimated $69.4M.
Westchester Capital Management (New York) first reported a position in Avidity Biosciences in Q4 2025 and held it in 1 quarter.
Westchester Capital Management (New York)'s Avidity Biosciences position peaked at $69.4M in Q4 2025.
1 fund tracked by Wall St. Rank held Avidity Biosciences as of Q1 2026.

Based on Westchester Capital Management (New York)'s 13F filing for Q1 2026, filed 15 May 2026.