Stock Ownership/REGN

Regeneron Pharmaceuticals, Inc. (REGN): Ownership & Insider Activity

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

Reported Holders
36
13F filers
Aggregate Value
$5.8B
Across holders
Last Price
$828.50
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity29 increased7 reduced7 exited
Full exits: Fisher Asset Management, LLC, Scion Asset Management, LLC, Point72 Asset Management, L.P., Lighthouse Investment Partners, LLC, FRED ALGER MANAGEMENT, LLC, Pinpoint Asset Management Ltd, ORBIMED ADVISORS LLC
Institutional Holders of REGN
↗
36 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
DODGE & COX
CIK 0000200217
Institutional Manager4.87M$3.0B52.2%1.6%Added+$257.5MQ2 2026
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
Hedge Fund1.13M$702.2M12.1%0.2%Reduced+$645.3MQ2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund656K$409.1M7.0%0.3%Reduced$-97.3MQ2 2026
Man Group plc
CIK 0001637460
Hedge Fund437K$272.5M4.7%0.4%Added$-104.4MQ2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
Hedge Fund394K$245.5M4.2%0.1%Added+$138.5MQ2 2026
Qube Research & Technologies Ltd
CIK 0001729829
Hedge Fund222K$138.2M2.4%0.1%Added+$86.2MQ2 2026
Squarepoint Ops LLC
CIK 0001642575
Hedge Fund199K$123.8M2.1%0.1%Added+$117.0MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund165K$103.0M1.8%0.0%Added+$85.4MQ2 2026
VOLORIDGE INVESTMENT MANAGEMENT, LLC
CIK 0001556921
Hedge Fund164K$102.2M1.8%0.4%Added+$92.7MQ2 2026
SOUTHEASTERN ASSET MANAGEMENT INC/TN/
CIK 0000807985
Hedge Fund152K$95.0M1.6%5.0%Added+$65.2MQ2 2026
DODGE & COXAdded
Institutional Manager
$3.0B· 52.2% of total· 1.6% port· 4.87M sh· +$257.5M QoQ· Q2 2026
AQR CAPITAL MANAGEMENT LLCReduced
Hedge Fund
$702.2M· 12.1% of total· 0.2% port· 1.13M sh· +$645.3M QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$409.1M· 7.0% of total· 0.3% port· 656K sh· $-97.3M QoQ· Q2 2026
Man Group plcAdded
Hedge Fund
$272.5M· 4.7% of total· 0.4% port· 437K sh· $-104.4M QoQ· Q2 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded
Hedge Fund
$245.5M· 4.2% of total· 0.1% port· 394K sh· +$138.5M QoQ· Q2 2026
Qube Research & Technologies LtdAdded
Hedge Fund
$138.2M· 2.4% of total· 0.1% port· 222K sh· +$86.2M QoQ· Q2 2026
Squarepoint Ops LLCAdded
Hedge Fund
$123.8M· 2.1% of total· 0.1% port· 199K sh· +$117.0M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$103.0M· 1.8% of total· 0.0% port· 165K sh· +$85.4M QoQ· Q2 2026
VOLORIDGE INVESTMENT MANAGEMENT, LLCAdded
Hedge Fund
$102.2M· 1.8% of total· 0.4% port· 164K sh· +$92.7M QoQ· Q2 2026
SOUTHEASTERN ASSET MANAGEMENT INC/TN/Added
Hedge Fund
$95.0M· 1.6% of total· 5.0% port· 152K sh· +$65.2M QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCAdded
Hedge Fund
$92.4M· 1.6% of total· 0.1% port· 148K sh· +$50.8M QoQ· Q2 2026
JUPITER ASSET MANAGEMENT LTDAdded
Hedge Fund
$78.6M· 1.4% of total· 0.4% port· 126K sh· +$78.3M QoQ· Q2 2026
Gotham Asset Management, LLCAdded
Hedge Fund
$65.6M· 1.1% of total· 0.2% port· 105K sh· +$13.9M QoQ· Q2 2026
ADAGE CAPITAL PARTNERS GP, L.L.C.Reduced
Hedge Fund
$52.2M· 0.9% of total· 0.1% port· 84K sh· $-12.1M QoQ· Q2 2026
Grantham, Mayo, Van Otterloo & Co. LLCAdded
Institutional Manager
$46.3M· 0.8% of total· 0.1% port· 74K sh· +$11.8M QoQ· Q2 2026
Woodline Partners LPAdded
Hedge Fund
$45.3M· 0.8% of total· 0.1% port· 73K sh· +$3.0M QoQ· Q2 2026
Clearbridge Investments, LLCReduced
Hedge Fund
$39.7M· 0.7% of total· 0.0% port· 64K sh· $-6.3M QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$35.9M· 0.6% of total· 0.0% port· 58K sh· +$1.0M QoQ· Q2 2026
Bridgewater Associates, LPAdded
Hedge Fund
$32.0M· 0.6% of total· 0.1% port· 51K sh· +$17.8M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$24.0M· 0.4% of total· 0.0% port· 38K sh· +$23.1M QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$14.3M· 0.2% of total· 0.0% port· 23K sh· +$14.1M QoQ· Q2 2026
Walleye Capital LLCAdded
Hedge Fund
$14.1M· 0.2% of total· 0.1% port· 23K sh· +$13.8M QoQ· Q2 2026
Rockefeller Capital Management L.P.Reduced
Hedge Fund
$13.4M· 0.2% of total· 0.0% port· 22K sh· $-51.9M QoQ· Q2 2026
Hudson Bay Capital Management LPReduced
Hedge Fund
$10.9M· 0.2% of total· 0.0% port· 18K sh· $-9.0M QoQ· Q2 2026
PineBridge Investments, L.P.Added
Hedge Fund
$6.1M· 0.1% of total· 0.0% port· 11K sh· +$3.5M QoQ· Q3 2025
BALYASNY ASSET MANAGEMENT LLCAdded
Hedge Fund
$5.9M· 0.1% of total· 0.0% port· 9K sh· +$5.3M QoQ· Q2 2026
Schonfeld Strategic Advisors LLCAdded
Hedge Fund
$3.0M· 0.1% of total· 0.0% port· 5K sh· — QoQ· Q2 2026
Verition Fund Management LLCAdded
Hedge Fund
$2.1M· 0.0% of total· 0.0% port· 3K sh· +$1.1M QoQ· Q2 2026
Brevan Howard Capital Management LPAdded
Hedge Fund
$1.2M· 0.0% of total· 0.0% port· 2K sh· +$1.0M QoQ· Q2 2026
TCW GROUP INCAdded
Hedge Fund
$1.1M· 0.0% of total· 0.0% port· 2K sh· +$19K QoQ· Q2 2026
Magnetar Financial LLCAdded
Hedge Fund
$836K· 0.0% of total· 0.0% port· 1K sh· +$273K QoQ· Q2 2026
CAPSTONE INVESTMENT ADVISORS, LLCAdded
Hedge Fund
$773K· 0.0% of total· 0.0% port· 1K sh· $-1.9M QoQ· Q2 2026
Eisler Capital (UK) Ltd.Added
Hedge Fund
$509K· 0.0% of total· 0.0% port· 484 sh· $-5.4M QoQ· Q3 2024
GAMCO INVESTORS, INC. ET ALAdded
Institutional Manager
$410K· 0.0% of total· 0.0% port· 657 sh· +$11K QoQ· Q2 2026
Bridgewater Advisors Inc.Added
Hedge Fund
$252K· 0.0% of total· 0.0% port· 340 sh· +$16K QoQ· Q2 2026
Alphadyne Asset Management LPReduced
Hedge Fund
$30K· 0.0% of total· 0.0% port· 48 sh· $-4.5M QoQ· Q2 2026
1–10 of 36
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