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
Q2 		$35.4M Buy
259,500
+39,300
+18% +$4.83M ﹤0.01% 1661
2026
Q1 		$25.9M Sell
220,200
-101,200
-31% -$14.1M ﹤0.01% 1555
2025
Q4 		$52.7M Sell
321,400
-64,600
-17% -$10.1M 0.01% 907
2025
Q3 		$51.6M Buy
386,000
+44,100
+13% +$5.36M 0.01% 940
2025
Q2 		$42.5M Buy
341,900
+145,500
+74% +$18.5M 0.01% 871
2025
Q1 		$25M Buy
196,400
+72,600
+59% +$11.2M 0.01% 1130
2024
Q4 		$17.8M Buy
123,800
+72,900
+143% +$10.5M ﹤0.01% 1348
2024
Q3 		$7.57M Buy
50,900
+23,600
+86% +$3.38M ﹤0.01% 2244
2024
Q2 		$3.44M Buy
27,300
+8,000
+41% +$1.25M ﹤0.01% 3570
2024
Q1 		$3.55M Buy
19,300
+12,600
+188% +$2.4M ﹤0.01% 3142
2023
Q4 		$1.2M Sell
6,700
-11,700
-64% -$1.82M ﹤0.01% 5225
2023
Q3 		$2.93M Buy
18,400
+6,100
+50% +$997K ﹤0.01% 3413
2023
Q2 		$1.74M Sell
12,300
-9,400
-43% -$1.51M ﹤0.01% 4367
2023
Q1 		$3.65M Sell
21,700
-3,300
-13% -$589K ﹤0.01% 2869
2022
Q4 		$4.23M Sell
25,000
-400
-2% -$72.6K ﹤0.01% 2710
2022
Q3 		$4.75M Sell
25,400
-16,900
-40% -$3.56M ﹤0.01% 2716
2022
Q2 		$6.87M Buy
42,300
+10,100
+31% +$1.6M ﹤0.01% 2207
2022
Q1 		$6.06M Sell
32,200
-500
-2% -$95K ﹤0.01% 2713
2021
Q4 		$8.66M Sell
32,700
-20,300
-38% -$5.47M ﹤0.01% 2056
2021
Q3 		$15.3M Buy
53,000
+40,000
+308% +$10.3M 0.01% 1330
2021
Q2 		$2.6M Sell
13,000
-19,700
-60% -$3.82M ﹤0.01% 3829
2021
Q1 		$6.36M Buy
32,700
+17,600
+117% +$3.61M ﹤0.01% 2063
2020
Q4 		$2.89M Buy
15,100
+13,200
+695% +$2.4M ﹤0.01% 2867
2020
Q3 		$280K Sell
1,900
-2,700
-59% -$386K ﹤0.01% 5980
2020
Q2 		$569K Buy
+4,600
New +$541K ﹤0.01% 4882

Other funds holding RGEN

BlackRock
BlackRock New York $6.73T AUM 46.02% 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
MC
Maverick Capital Dallas, Texas $11.3B AUM 76.6% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return

Jane Street's RGEN Position: Q2 2026 in Review

Jane Street increased its Repligen (RGEN) stake by 5.1% in Q2 2026, buying an estimated $219K and bringing the position to 36,759 shares worth $5.02M. The position accounts for ﹤0.01% of the portfolio, ranked #3706.

Jane Street first reported a position in RGEN in Q3 2013 and has held it in 33 quarters since. The position peaked at $33.1M in Q3 2022. 482 funds tracked by Wall St. Rank hold RGEN as of Q2 2026.

  • Jane Street held 36,759 shares of Repligen worth $5.02M as of Q2 2026.
  • Jane Street bought 1,781 Repligen shares in Q2 2026, an estimated $219K.
  • Repligen made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #3706 holding.
  • Jane Street first reported a position in Repligen in Q3 2013 and has held it in 33 quarters since.
  • Jane Street's Repligen position peaked at $33.1M in Q3 2022.
  • 482 funds tracked by Wall St. Rank held Repligen as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.