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Natixis’s Repligen RGEN Stock Holding History

Natixis’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 		– Sell
-2,586
Closed -$346K – 1271
2025
Q3 		$346K Buy
2,586
+2,236
+639% +$272K ﹤0.01% 826
2025
Q2 		$43.5K Sell
350
-4,215
-92% -$536K ﹤0.01% 891
2025
Q1 		$580K Buy
+4,565
New +$703K ﹤0.01% 640
2023
Q3 		– Sell
-116,052
Closed -$16.4M – 1122
2023
Q2 		$16.4M Buy
+116,052
New +$18.6M 0.13% 143
2022
Q1 		– Sell
-6,561
Closed -$1.74M – 1301
2021
Q4 		$1.74M Buy
+6,561
New +$1.77M 0.01% 811
2021
Q1 		– Sell
-21,600
Closed -$4.14M – 1167
2020
Q4 		$4.14M Buy
+21,600
New +$3.93M 0.02% 547

Other funds holding RGEN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 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
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $875B AUM 40.89% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

Natixis's RGEN Position: Q4 2025 in Review

Natixis sold out of Repligen (RGEN) in Q4 2025, closing a stake of 2,586 shares — an estimated $346K sold.

Natixis first reported a position in RGEN in Q4 2020 and held it in 6 quarters. The position peaked at $16.4M in Q2 2023. 474 funds tracked by Wall St. Rank hold RGEN as of Q4 2025.

  • Natixis reported no remaining Repligen position as of Q4 2025 after selling out during the quarter.
  • Natixis sold 2,586 Repligen shares in Q4 2025, an estimated $346K.
  • Natixis first reported a position in Repligen in Q4 2020 and held it in 6 quarters.
  • Natixis's Repligen position peaked at $16.4M in Q2 2023.
  • 474 funds tracked by Wall St. Rank held Repligen as of Q4 2025.

Based on Natixis's 13F filing for Q4 2025, filed 13 Feb 2026.