Stock Ownership/RGEN

REPLIGEN CORP (RGEN): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in RGEN · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
25
13F filers
Aggregate Value
$825.9M
Across holders
Last Price
$181.62
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity20 increased4 reduced2 exited
Full exits: MILLENNIUM MANAGEMENT LLC, CAPSTONE INVESTMENT ADVISORS, LLC
Institutional Holders of RGEN
↗
25 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
MAVERICK CAPITAL LTD
CIK 0000934639
Hedge Fund1.98M$270.8M32.8%2.4%Added+$63.5MQ2 2026
Holocene Advisors, LP
CIK 0001700574
Hedge Fund1.29M$176.3M21.3%0.4%Added+$79.6MQ2 2026
FRED ALGER MANAGEMENT, LLC
CIK 0000003520
Hedge Fund734K$100.1M12.1%0.3%Added+$40.8MQ2 2026
CITADEL ADVISORS LLC
CIK 0001423053
Hedge Fund376K$51.3M6.2%0.0%Reduced+$45.1MQ2 2026
BALYASNY ASSET MANAGEMENT LLC
CIK 0001218710
Hedge Fund356K$48.5M5.9%0.1%Added+$31.4MQ2 2026
PRIMECAP MANAGEMENT CO/CA/
CIK 0000763212
Institutional Manager323K$44.1M5.3%0.0%Added+$12.0MQ2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund282K$38.5M4.7%0.0%Added—Q2 2026
Point72 Asset Management, L.P.
CIK 0001603466
Hedge Fund166K$22.7M2.7%0.0%Reduced$-55.0MQ2 2026
Gotham Asset Management, LLC
CIK 0001510387
Hedge Fund143K$19.5M2.4%0.0%Added+$15.5MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund83K$11.4M1.4%0.0%Added+$4.2MQ2 2026
MAVERICK CAPITAL LTDAdded
Hedge Fund
$270.8M· 32.8% of total· 2.4% port· 1.98M sh· +$63.5M QoQ· Q2 2026
Holocene Advisors, LPAdded
Hedge Fund
$176.3M· 21.3% of total· 0.4% port· 1.29M sh· +$79.6M QoQ· Q2 2026
FRED ALGER MANAGEMENT, LLCAdded
Hedge Fund
$100.1M· 12.1% of total· 0.3% port· 734K sh· +$40.8M QoQ· Q2 2026
CITADEL ADVISORS LLCReduced
Hedge Fund
$51.3M· 6.2% of total· 0.0% port· 376K sh· +$45.1M QoQ· Q2 2026
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$48.5M· 5.9% of total· 0.1% port· 356K sh· +$31.4M QoQ· Q2 2026
PRIMECAP MANAGEMENT CO/CA/Added
Institutional Manager
$44.1M· 5.3% of total· 0.0% port· 323K sh· +$12.0M QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$38.5M· 4.7% of total· 0.0% port· 282K sh· — QoQ· Q2 2026
Point72 Asset Management, L.P.Reduced
Hedge Fund
$22.7M· 2.7% of total· 0.0% port· 166K sh· $-55.0M QoQ· Q2 2026
Gotham Asset Management, LLCAdded
Hedge Fund
$19.5M· 2.4% of total· 0.0% port· 143K sh· +$15.5M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$11.4M· 1.4% of total· 0.0% port· 83K sh· +$4.2M QoQ· Q2 2026
Duquesne Family Office LLCAdded
Family Office
$10.6M· 1.3% of total· 0.2% port· 77K sh· — QoQ· Q2 2026
Hudson Bay Capital Management LPReduced
Hedge Fund
$8.2M· 1.0% of total· 0.0% port· 60K sh· $-4.4M QoQ· Q2 2026
Verition Fund Management LLCAdded
Hedge Fund
$5.2M· 0.6% of total· 0.0% port· 38K sh· — QoQ· Q2 2026
MOORE CAPITAL MANAGEMENT, LPAdded
Hedge Fund
$5.1M· 0.6% of total· 0.1% port· 38K sh· — QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$3.5M· 0.4% of total· 0.0% port· 26K sh· — QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$2.8M· 0.3% of total· 0.0% port· 20K sh· $-275K QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$2.4M· 0.3% of total· 0.0% port· 18K sh· — QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPAdded
Hedge Fund
$1.4M· 0.2% of total· 0.0% port· 10K sh· — QoQ· Q2 2026
Lighthouse Investment Partners, LLCAdded
Hedge Fund
$1.3M· 0.2% of total· 0.0% port· 10K sh· +$1.1M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCAdded
Hedge Fund
$1.2M· 0.1% of total· 0.0% port· 9K sh· +$1.2M QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$585K· 0.1% of total· 0.0% port· 4K sh· — QoQ· Q2 2026
Walleye Capital LLCAdded
Hedge Fund
$233K· 0.0% of total· 0.0% port· 2K sh· — QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$202K· 0.0% of total· 0.0% port· 1K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$66K· 0.0% of total· 0.0% port· 487 sh· $-220K QoQ· Q2 2026
Ancora Advisors, LLCUnchanged
Hedge Fund
$2K· 0.0% of total· 0.0% port· 12 sh· +$0 QoQ· Q2 2026
1–10 of 25
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