Holocene Advisors
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Holocene Advisors’s Repligen RGEN Stock Holding History

Holocene Advisors’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 		$176M Buy
1,292,191
+583,302
+82% +$71.7M 0.4% 67
2026
Q1 		$83.5M Sell
708,889
-252,151
-26% -$35.2M 0.2% 128
2025
Q4 		$157M Sell
961,040
-416,064
-30% -$65.2M 0.33% 82
2025
Q3 		$184M Buy
1,377,104
+440,290
+47% +$53.5M 0.42% 55
2025
Q2 		$117M Sell
936,814
-23,168
-2% -$2.95M 0.28% 95
2025
Q1 		$122M Buy
959,982
+648,878
+209% +$99.9M 0.36% 82
2024
Q4 		$44.8M Buy
+311,104
New +$44.6M 0.14% 172
2024
Q2 		– Sell
-342,388
Closed -$63M – 827
2024
Q1 		$63M Buy
342,388
+37,474
+12% +$7.14M 0.23% 137
2023
Q4 		$54.8M Buy
+304,914
New +$47.5M 0.21% 143
2021
Q3 		– Sell
-256,780
Closed -$51.3M – 949
2021
Q2 		$51.3M Buy
256,780
+76,048
+42% +$14.8M 0.29% 119
2021
Q1 		$35.1M Sell
180,732
-49,745
-22% -$10.2M 0.22% 132
2020
Q4 		$44.2M Sell
230,477
-58,362
-20% -$10.6M 0.28% 127
2020
Q3 		$42.6M Buy
+288,839
New +$41.3M 0.32% 96
2018
Q2 		– Sell
-6,547
Closed -$237K – 704
2018
Q1 		$237K Buy
+6,547
New +$230K 0.01% 477

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

Holocene Advisors's RGEN Position: Q2 2026 in Review

Holocene Advisors increased its Repligen (RGEN) stake by 82% in Q2 2026, buying an estimated $71.7M and bringing the position to 1,292,191 shares worth $176M. The position accounts for 0.4% of the portfolio, ranked #67.

Holocene Advisors first reported a position in RGEN in Q1 2018 and has held it in 14 quarters since. The position peaked at $184M in Q3 2025. 481 funds tracked by Wall St. Rank hold RGEN as of Q2 2026.

  • Holocene Advisors held 1,292,191 shares of Repligen worth $176M as of Q2 2026.
  • Holocene Advisors bought 583,302 Repligen shares in Q2 2026, an estimated $71.7M.
  • Repligen made up 0.4% of Holocene Advisors's portfolio in Q2 2026, its #67 holding.
  • Holocene Advisors first reported a position in Repligen in Q1 2018 and has held it in 14 quarters since.
  • Holocene Advisors's Repligen position peaked at $184M in Q3 2025.
  • 481 funds tracked by Wall St. Rank held Repligen as of Q2 2026.

Based on Holocene Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.