Jane Street
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Jane Street’s Repligen RGEN Stock Holding History

Jane Street’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
-1,700
Closed -$279K – 12766
2025
Q4 		$279K Sell
1,700
-34,100
-95% -$5.34M ﹤0.01% 9003
2025
Q3 		$4.79M Buy
35,800
+29,200
+442% +$3.55M ﹤0.01% 3488
2025
Q2 		$821K Sell
6,600
-1,200
-15% -$153K ﹤0.01% 5991
2025
Q1 		$992K Sell
7,800
-58,200
-88% -$8.96M ﹤0.01% 5590
2024
Q4 		$9.5M Sell
66,000
-46,200
-41% -$6.62M ﹤0.01% 1935
2024
Q3 		$16.7M Buy
112,200
+51,300
+84% +$7.36M ﹤0.01% 1391
2024
Q2 		$7.68M Buy
60,900
+800
+1% +$125K ﹤0.01% 2349
2024
Q1 		$11.1M Buy
60,100
+14,700
+32% +$2.8M ﹤0.01% 1721
2023
Q4 		$8.16M Sell
45,400
-9,700
-18% -$1.51M ﹤0.01% 2197
2023
Q3 		$8.76M Buy
55,100
+27,200
+97% +$4.45M ﹤0.01% 1929
2023
Q2 		$3.95M Buy
27,900
+14,900
+115% +$2.39M ﹤0.01% 3080
2023
Q1 		$2.19M Sell
13,000
-173,800
-93% -$31M ﹤0.01% 3664
2022
Q4 		$31.6M Buy
186,800
+157,100
+529% +$28.5M 0.01% 730
2022
Q3 		$5.56M Sell
29,700
-17,000
-36% -$3.58M ﹤0.01% 2439
2022
Q2 		$7.58M Buy
46,700
+7,200
+18% +$1.14M ﹤0.01% 2076
2022
Q1 		$7.43M Buy
39,500
+12,300
+45% +$2.34M ﹤0.01% 2408
2021
Q4 		$7.2M Sell
27,200
-9,000
-25% -$2.42M ﹤0.01% 2315
2021
Q3 		$10.5M Buy
36,200
+21,800
+151% +$5.59M ﹤0.01% 1756
2021
Q2 		$2.88M Sell
14,400
-12,200
-46% -$2.37M ﹤0.01% 3645
2021
Q1 		$5.17M Buy
26,600
+300
+1% +$61.5K ﹤0.01% 2364
2020
Q4 		$5.04M Buy
26,300
+18,200
+225% +$3.31M ﹤0.01% 2127
2020
Q3 		$1.2M Buy
8,100
+2,900
+56% +$415K ﹤0.01% 3793
2020
Q2 		$643K Buy
+5,200
New +$612K ﹤0.01% 4693

Other funds holding RGEN

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Fidelity Investments
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
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return
MC
Maverick Capital Dallas, Texas $8.67B AUM 48.76% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return

Jane Street's RGEN Position: Q1 2026 in Review

Jane Street reduced its Repligen (RGEN) stake by 5% in Q1 2026, selling an estimated $257K and leaving 34,978 shares worth $4.12M. The position accounts for ﹤0.01% of the portfolio, ranked #3796.

Jane Street first reported a position in RGEN in Q3 2013 and has held it in 32 quarters since. The position peaked at $33.1M in Q3 2022. 442 funds tracked by Wall St. Rank hold RGEN as of Q1 2026.

  • Jane Street held 34,978 shares of Repligen worth $4.12M as of Q1 2026.
  • Jane Street sold 1,838 Repligen shares in Q1 2026, an estimated $257K.
  • Repligen made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #3796 holding.
  • Jane Street first reported a position in Repligen in Q3 2013 and has held it in 32 quarters since.
  • Jane Street's Repligen position peaked at $33.1M in Q3 2022.
  • 442 funds tracked by Wall St. Rank held Repligen as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.