Balyasny Asset Management
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Balyasny Asset Management’s Repligen RGEN Stock Holding History

Balyasny 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 		$14.8M Buy
125,469
+10,416
+9% +$1.46M 0.02% 828
2025
Q4 		$18.9M Sell
115,053
-652,186
-85% -$102M 0.02% 746
2025
Q3 		$103M Buy
767,239
+610,837
+391% +$74.2M 0.13% 168
2025
Q2 		$19.5M Buy
156,402
+106,252
+212% +$13.5M 0.03% 680
2025
Q1 		$6.38M Buy
+50,150
New +$7.72M 0.01% 1138
2024
Q2 		– Sell
-77,176
Closed -$14.2M – 3013
2024
Q1 		$14.2M Buy
+77,176
New +$14.7M 0.02% 780
2023
Q2 		– Sell
-80,772
Closed -$13.6M – 2707
2023
Q1 		$13.6M Sell
80,772
-46,957
-37% -$8.38M 0.03% 664
2022
Q4 		$21.6M Buy
127,729
+126,515
+10,421% +$22.9M 0.06% 460
2022
Q3 		$227K Buy
+1,214
New +$256K ﹤0.01% 2278
2022
Q1 		– Sell
-1,925
Closed -$510K – 2780
2021
Q4 		$510K Buy
+1,925
New +$519K ﹤0.01% 1612
2021
Q3 		– Sell
-56,185
Closed -$11.2M – 2349
2021
Q2 		$11.2M Sell
56,185
-94,823
-63% -$18.4M 0.05% 472
2021
Q1 		$29.4M Buy
151,008
+41,740
+38% +$8.56M 0.14% 173
2020
Q4 		$20.9M Sell
109,268
-16,964
-13% -$3.09M 0.12% 247
2020
Q3 		$18.6M Buy
126,232
+42,736
+51% +$6.11M 0.14% 206
2020
Q2 		$10.3M Buy
83,496
+47,646
+133% +$5.61M 0.09% 329
2020
Q1 		$3.46M Buy
+35,850
New +$3.46M 0.04% 493
2019
Q3 		– Sell
-15,109
Closed -$1.3M – 1511
2019
Q2 		$1.3M Buy
15,109
+7,066
+88% +$482K 0.01% 1004
2019
Q1 		$475K Sell
8,043
-10,634
-57% -$612K ﹤0.01% 1217
2018
Q4 		$985K Buy
+18,677
New +$1.1M 0.01% 904
2018
Q3 		– Sell
-57,622
Closed -$2.71M – 1981
2018
Q2 		$2.71M Buy
+57,622
New +$2.37M 0.01% 835

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

Balyasny Asset Management's RGEN Position: Q1 2026 in Review

Balyasny Asset Management increased its Repligen (RGEN) stake by 9.1% in Q1 2026, buying an estimated $1.46M and bringing the position to 125,469 shares worth $14.8M. The position accounts for 0.02% of the portfolio, ranked #828.

Balyasny Asset Management first reported a position in RGEN in Q2 2018 and has held it in 20 quarters since. The position peaked at $103M in Q3 2025. 441 funds tracked by Wall St. Rank hold RGEN as of Q1 2026.

  • Balyasny Asset Management held 125,469 shares of Repligen worth $14.8M as of Q1 2026.
  • Balyasny Asset Management bought 10,416 Repligen shares in Q1 2026, an estimated $1.46M.
  • Repligen made up 0.02% of Balyasny Asset Management's portfolio in Q1 2026, its #828 holding.
  • Balyasny Asset Management first reported a position in Repligen in Q2 2018 and has held it in 20 quarters since.
  • Balyasny Asset Management's Repligen position peaked at $103M in Q3 2025.
  • 441 funds tracked by Wall St. Rank held Repligen as of Q1 2026.

Based on Balyasny Asset Management's 13F filing for Q1 2026, filed 15 May 2026.