Thomas Steyer’s Avidity Biosciences RNAM Stock Holding History

Thomas Steyer’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	-3,233,000	Closed	-$233M	–	195
2025 Q4	$233M	Buy	+3,233,000	New	+$209M	1.01%	35
2024 Q4	–	Sell	-5,000	Closed	-$230K	–	167
2024 Q3	$230K	Hold	5,000	–	–	﹤0.01%	135
2024 Q2	$204K	Sell	5,000 -601,061	-99%	-$17.2M	﹤0.01%	137
2024 Q1	$15.5M	Buy	+606,061	New	+$9.5M	0.07%	85
2020 Q3	–	Sell	-50,000	Closed	-$1.41M	–	132
2020 Q2	$1.41M	Buy	+50,000	New	+$1.44M	0.01%	116

Other funds holding RNAM

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

Thomas Steyer's RNAM Position: Q1 2026 in Review

Thomas Steyer sold out of Avidity Biosciences (RNAM) in Q1 2026, closing a stake of 3,233,000 shares — an estimated $233M sold.

Thomas Steyer first reported a position in RNAM in Q2 2020 and held it in 5 quarters. The position peaked at $233M in Q4 2025. 1 fund tracked by Wall St. Rank holds RNAM as of Q1 2026.

Thomas Steyer reported no remaining Avidity Biosciences position as of Q1 2026 after selling out during the quarter.
Thomas Steyer sold 3,233,000 Avidity Biosciences shares in Q1 2026, an estimated $233M.
Thomas Steyer first reported a position in Avidity Biosciences in Q2 2020 and held it in 5 quarters.
Thomas Steyer's Avidity Biosciences position peaked at $233M in Q4 2025.
1 fund tracked by Wall St. Rank held Avidity Biosciences as of Q1 2026.

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