Arrowstreet Capital’s Repligen RGEN Stock Holding History

Arrowstreet Capital’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
2026 Q2	$2.43M	Buy	+17,822	New	+$2.19M	﹤0.01%	1487
2022 Q1	–	Sell	-144,517	Closed	-$38.3M	–	1480
2021 Q4	$38.3M	Sell	144,517 -49,322	-25%	-$13.3M	0.05%	332
2021 Q3	$56M	Sell	193,839 -14,449	-7%	-$3.71M	0.07%	292
2021 Q2	$41.6M	Sell	208,288 -43,383	-17%	-$8.42M	0.05%	373
2021 Q1	$48.9M	Sell	251,671 -60,329	-19%	-$12.4M	0.07%	298
2020 Q4	$59.8M	Buy	312,000 +68,522	+28%	+$12.5M	0.08%	232
2020 Q3	$35.9M	Buy	243,478 +156,283	+179%	+$22.3M	0.06%	336
2020 Q2	$10.8M	Buy	+87,195	New	+$10.3M	0.02%	749
2019 Q3	–	Sell	-11,864	Closed	-$1.02M	–	1686
2019 Q2	$1.02M	Sell	11,864 -37,133	-76%	-$2.53M	﹤0.01%	1055
2019 Q1	$2.9M	Buy	+48,997	New	+$2.82M	0.01%	982

Other funds holding RGEN

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

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

UCFA

United Capital Financial Advisors Irving, Texas $18.2B AUM 22.02% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Maverick Capital Dallas, Texas $11.3B AUM 76.6% 1-Year Est. Return

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

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return

Arrowstreet Capital's RGEN Position: Q2 2026 in Review

Arrowstreet Capital opened a new position in Repligen (RGEN) in Q2 2026: 17,822 shares worth $2.43M. The stake represents ﹤0.01% of the portfolio and ranks #1487 among its holdings. This is a return to the name: Arrowstreet Capital previously reported a position in RGEN as recently as Q4 2021.

Arrowstreet Capital first reported a position in RGEN in Q1 2019 and has held it in 10 quarters since. The position peaked at $59.8M in Q4 2020. 482 funds tracked by Wall St. Rank hold RGEN as of Q2 2026.

Arrowstreet Capital held 17,822 shares of Repligen worth $2.43M as of Q2 2026.
Repligen was a new Arrowstreet Capital position in Q2 2026.
Repligen made up ﹤0.01% of Arrowstreet Capital's portfolio in Q2 2026, its #1487 holding.
Arrowstreet Capital first reported a position in Repligen in Q1 2019 and has held it in 10 quarters since.
Arrowstreet Capital's Repligen position peaked at $59.8M in Q4 2020.
482 funds tracked by Wall St. Rank held Repligen as of Q2 2026.

Based on Arrowstreet Capital's 13F filing for Q2 2026, filed 13 Aug 2026.