Iron Triangle Partners’s Repligen RGEN Stock Holding History

Iron Triangle Partners’s Portfolio RGEN Stock Details RGEN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	$52.5M	Buy	320,474 +50,474	+19%	+$7.91M	6%	3
2025 Q3	$36.1M	Buy	+270,000	New	+$32.8M	5.13%	8
2024 Q1	–	Sell	-82,537	Closed	-$14.8M	–	36
2023 Q4	$14.8M	Buy	+82,537	New	+$12.8M	1.92%	23
2023 Q1	–	Sell	-178,000	Closed	-$30.1M	–	33
2022 Q4	$30.1M	Buy	178,000 +78,000	+78%	+$14.1M	5.4%	8
2022 Q3	$18.7M	Sell	100,000 -150,000	-60%	-$31.6M	3.27%	12
2022 Q2	$40.6M	Buy	+250,000	New	+$39.5M	5.26%	4
2020 Q1	–	Sell	-150,000	Closed	-$13.9M	–	32
2019 Q4	$13.9M	Buy	+150,000	New	+$12.6M	3.68%	12

Other funds holding RGEN

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

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

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

UCFA

United Capital Financial Advisors Irving, Texas $16.3B AUM 16.34% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return

Iron Triangle Partners's RGEN Position: Q4 2025 in Review

Iron Triangle Partners increased its Repligen (RGEN) stake by 19% in Q4 2025, buying an estimated $7.91M and bringing the position to 320,474 shares worth $52.5M. The position accounts for 6% of the portfolio, ranked #3.

Iron Triangle Partners first reported a position in RGEN in Q4 2019 and has held it in 7 quarters since. 473 funds tracked by Wall St. Rank hold RGEN as of Q4 2025.

Iron Triangle Partners held 320,474 shares of Repligen worth $52.5M as of Q4 2025.
Iron Triangle Partners bought 50,474 Repligen shares in Q4 2025, an estimated $7.91M.
Repligen made up 6% of Iron Triangle Partners's portfolio in Q4 2025, its #3 holding.
Iron Triangle Partners first reported a position in Repligen in Q4 2019 and has held it in 7 quarters since.
473 funds tracked by Wall St. Rank held Repligen as of Q4 2025.

Based on Iron Triangle Partners's 13F filing for Q4 2025, filed 17 Feb 2026.