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O'Shaughnessy Asset Management’s Repligen RGEN Stock Holding History

O'Shaughnessy Asset Management’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
Q1 		– Sell
-2,335
Closed -$383K – 2802
2025
Q4 		$383K Buy
2,335
+630
+37% +$98.7K ﹤0.01% 1646
2025
Q3 		$228K Buy
+1,705
New +$207K ﹤0.01% 1903
2025
Q2 		– Sell
-1,978
Closed -$252K – 2481
2025
Q1 		$252K Buy
+1,978
New +$304K ﹤0.01% 1679
2024
Q2 		– Sell
-1,924
Closed -$354K – 2033
2024
Q1 		$354K Buy
1,924
+125
+7% +$23.8K ﹤0.01% 1246
2023
Q4 		$323K Sell
1,799
-623
-26% -$97K ﹤0.01% 1186
2023
Q3 		$385K Buy
+2,422
New +$396K 0.01% 1017
2022
Q4 		– Sell
-1,535
Closed -$287K – 1448
2022
Q3 		$287K Buy
+1,535
New +$324K 0.01% 945
2022
Q1 		– Sell
-997
Closed -$264K – 1353
2021
Q4 		$264K Sell
997
-32
-3% -$8.62K ﹤0.01% 933
2021
Q3 		$298K Buy
1,029
+306
+42% +$78.5K 0.01% 853
2021
Q2 		$144K Buy
723
+202
+39% +$39.2K ﹤0.01% 1172
2021
Q1 		$101K Sell
521
-10
-2% -$2.05K ﹤0.01% 1194
2020
Q4 		$102K Buy
531
+486
+1,080% +$88.4K ﹤0.01% 1064
2020
Q3 		$7K Sell
45
-6,517
-99% -$932K ﹤0.01% 1438
2020
Q2 		$812K Sell
6,562
-229
-3% -$26.9K 0.03% 311
2020
Q1 		$658K Sell
6,791
-6,623
-49% -$639K 0.02% 263
2019
Q4 		$1.24M Sell
13,414
-1,377
-9% -$116K 0.03% 242
2019
Q3 		$1.13M Buy
14,791
+7,766
+111% +$679K 0.03% 247
2019
Q2 		$602K Hold
7,025
– – 0.01% 336
2019
Q1 		$413K Buy
+7,025
New +$404K 0.01% 400

Other funds holding RGEN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Fidelity Investments
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
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
MC
Maverick Capital Dallas, Texas $11.3B AUM 76.6% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

O'Shaughnessy Asset Management's RGEN Position: Q1 2026 in Review

O'Shaughnessy Asset Management sold out of Repligen (RGEN) in Q1 2026, closing a stake of 2,335 shares — an estimated $383K sold.

O'Shaughnessy Asset Management first reported a position in RGEN in Q1 2019 and held it in 19 quarters. The position peaked at $1.24M in Q4 2019. 445 funds tracked by Wall St. Rank hold RGEN as of Q1 2026.

  • O'Shaughnessy Asset Management reported no remaining Repligen position as of Q1 2026 after selling out during the quarter.
  • O'Shaughnessy Asset Management sold 2,335 Repligen shares in Q1 2026, an estimated $383K.
  • O'Shaughnessy Asset Management first reported a position in Repligen in Q1 2019 and held it in 19 quarters.
  • O'Shaughnessy Asset Management's Repligen position peaked at $1.24M in Q4 2019.
  • 445 funds tracked by Wall St. Rank held Repligen as of Q1 2026.

Based on O'Shaughnessy Asset Management's 13F filing for Q1 2026, filed 13 May 2026.