Siren LLC’s Regenxbio RGNX Stock Holding History

Siren LLC’s Portfolio RGNX Stock Details RGNX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q1	–	Sell	-284,000	Closed	-$2.2M	–	136
2024 Q4	$2.2M	Hold	284,000	–	–	0.1%	90
2024 Q3	$2.98M	Buy	+284,000	New	+$3.46M	0.15%	77

Other funds holding RGNX

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

Redmile Group San Francisco, California $1.49B AUM 208.7% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Balyasny Asset Management Chicago, Illinois $80.2B AUM 51.53% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return

Siren LLC's RGNX Position: Q1 2025 in Review

Siren LLC sold out of Regenxbio (RGNX) in Q1 2025, closing a stake of 284,000 shares — an estimated $2.2M sold.

Siren LLC first reported a position in RGNX in Q3 2024 and held it in 2 quarters. The position peaked at $2.98M in Q3 2024. 164 funds tracked by Wall St. Rank hold RGNX as of Q1 2025.

Siren LLC reported no remaining Regenxbio position as of Q1 2025 after selling out during the quarter.
Siren LLC sold 284,000 Regenxbio shares in Q1 2025, an estimated $2.2M.
Siren LLC first reported a position in Regenxbio in Q3 2024 and held it in 2 quarters.
Siren LLC's Regenxbio position peaked at $2.98M in Q3 2024.
164 funds tracked by Wall St. Rank held Regenxbio as of Q1 2025.

Based on Siren LLC's 13F filing for Q1 2025, filed 14 May 2025.