REGENERON PHARMACEUTICALS (REGN): Institutional Ownership
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
30
13F filers
Aggregate Value
$5.0B
Across holders
Last Price
$632.90
2026-06-26
Sector
Health Care
GICS
Holder activity6 new10 added14 reduced
| Manager⇅ | Type⇅ | Shares⇅ | Market Value▼ | % of Total⇅ | % of Portfolio⇅ | Action⇅ | QoQ Change⇅ | Quarter⇅ |
|---|---|---|---|---|---|---|---|---|
| DODGE & COX CIK 0000200217 | Institutional Manager | 4.46M | $3.4B | 68.3% | 1.9% | Reduced | $-106.7M | Q1 2026 |
| TWO SIGMA INVESTMENTS, LP CIK 0001179392 | Hedge Fund | 812K | $627.6M | 12.5% | 0.5% | Added | +$410.3M | Q1 2026 |
| Holocene Advisors, LP CIK 0001700574 | Hedge Fund | 461K | $355.6M | 7.1% | 0.7% | New | — | Q4 2025 |
| Scion Asset Management, LLC CIK 0001649339 | Hedge Fund | 200K | $105.0M | 2.1% | 18.2% | New | — | Q2 2025 |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ CIK 0000807985 | Hedge Fund | 107K | $82.5M | 1.6% | 4.1% | Reduced | $-24.6M | Q1 2026 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. CIK 0001165408 | Hedge Fund | 103K | $79.7M | 1.6% | 0.1% | Added | +$16.0M | Q1 2026 |
| Qube Research & Technologies Ltd CIK 0001729829 | Hedge Fund | 83K | $64.4M | 1.3% | 0.1% | Added | +$45.3M | Q1 2026 |
| Gotham Asset Management, LLC CIK 0001510387 | Hedge Fund | 83K | $64.0M | 1.3% | 0.2% | Added | +$2.0M | Q1 2026 |
| RENAISSANCE TECHNOLOGIES LLC CIK 0001037389 | Hedge Fund | 67K | $51.6M | 1.0% | 0.1% | Added | +$44.6M | Q1 2026 |
| Grantham, Mayo, Van Otterloo & Co. LLC CIK 0001352662 | Institutional Manager | 55K | $42.8M | 0.8% | 0.1% | Reduced | $-1.0M | Q1 2026 |
| STEADFAST CAPITAL MANAGEMENT LP CIK 0001214822 | Hedge Fund | 35K | $27.2M | 0.5% | 0.5% | New | — | Q4 2025 |
| Hudson Bay Capital Management LP CIK 0001393825 | Hedge Fund | 32K | $24.7M | 0.5% | 0.1% | Added | +$4.5M | Q1 2026 |
| CITADEL ADVISORS LLC CIK 0001423053 | Hedge Fund | 28K | $21.6M | 0.4% | 0.0% | Reduced | $-190.1M | Q1 2026 |
| Bridgewater Associates, LP CIK 0001350694 | Hedge Fund | 23K | $17.6M | 0.3% | 0.1% | Reduced | $-38.6M | Q1 2026 |
| Man Group plc CIK 0001637460 | Hedge Fund | 13K | $10.1M | 0.2% | 0.0% | Reduced | $-157.9M | Q1 2026 |
| Fisher Asset Management, LLC CIK 0000850529 | Institutional Manager | 5K | $3.9M | 0.1% | 0.0% | Added | +$53K | Q1 2026 |
| Eisler Capital (UK) Ltd. CIK 0001849486 | Hedge Fund | 3K | $3.6M | 0.1% | 0.0% | Added | +$631K | Q3 2024 |
| Walleye Capital LLC CIK 0001758720 | Hedge Fund | 4K | $3.1M | 0.1% | 0.0% | Reduced | $-6.5M | Q1 2026 |
| ExodusPoint Capital Management, LP CIK 0001736225 | Hedge Fund | 4K | $2.9M | 0.1% | 0.0% | Reduced | $-51.0M | Q1 2026 |
| Schonfeld Strategic Advisors LLC CIK 0001665241 | Hedge Fund | 3K | $1.5M | 0.0% | 0.0% | New | — | Q3 2025 |
Reduced
Institutional Manager
$3.4B· 68.3% of total· 1.9% port· 4.46M sh· $-106.7M QoQ· Q1 2026
Added
Hedge Fund
$627.6M· 12.5% of total· 0.5% port· 812K sh· +$410.3M QoQ· Q1 2026
New
Hedge Fund
$355.6M· 7.1% of total· 0.7% port· 461K sh· — QoQ· Q4 2025
New
Hedge Fund
$105.0M· 2.1% of total· 18.2% port· 200K sh· — QoQ· Q2 2025
Reduced
Hedge Fund
$82.5M· 1.6% of total· 4.1% port· 107K sh· $-24.6M QoQ· Q1 2026
Added
Hedge Fund
$79.7M· 1.6% of total· 0.1% port· 103K sh· +$16.0M QoQ· Q1 2026
Added
Hedge Fund
$64.4M· 1.3% of total· 0.1% port· 83K sh· +$45.3M QoQ· Q1 2026
Added
Hedge Fund
$64.0M· 1.3% of total· 0.2% port· 83K sh· +$2.0M QoQ· Q1 2026
Added
Hedge Fund
$51.6M· 1.0% of total· 0.1% port· 67K sh· +$44.6M QoQ· Q1 2026
Reduced
Institutional Manager
$42.8M· 0.8% of total· 0.1% port· 55K sh· $-1.0M QoQ· Q1 2026
New
Hedge Fund
$27.2M· 0.5% of total· 0.5% port· 35K sh· — QoQ· Q4 2025
Added
Hedge Fund
$24.7M· 0.5% of total· 0.1% port· 32K sh· +$4.5M QoQ· Q1 2026
Reduced
Hedge Fund
$21.6M· 0.4% of total· 0.0% port· 28K sh· $-190.1M QoQ· Q1 2026
Reduced
Hedge Fund
$17.6M· 0.3% of total· 0.1% port· 23K sh· $-38.6M QoQ· Q1 2026
Reduced
Hedge Fund
$10.1M· 0.2% of total· 0.0% port· 13K sh· $-157.9M QoQ· Q1 2026
Added
Institutional Manager
$3.9M· 0.1% of total· 0.0% port· 5K sh· +$53K QoQ· Q1 2026
Added
Hedge Fund
$3.6M· 0.1% of total· 0.0% port· 3K sh· +$631K QoQ· Q3 2024
Reduced
Hedge Fund
$3.1M· 0.1% of total· 0.0% port· 4K sh· $-6.5M QoQ· Q1 2026
Reduced
Hedge Fund
$2.9M· 0.1% of total· 0.0% port· 4K sh· $-51.0M QoQ· Q1 2026
New
Hedge Fund
$1.5M· 0.0% of total· 0.0% port· 3K sh· — QoQ· Q3 2025
New
Hedge Fund
$1.4M· 0.0% of total· 0.2% port· 2K sh· — QoQ· Q4 2024
Reduced
Hedge Fund
$1.2M· 0.0% of total· 0.0% port· 2K sh· $-51.8M QoQ· Q1 2026
Reduced
Hedge Fund
$1.1M· 0.0% of total· 0.0% port· 1K sh· $-6.2M QoQ· Q1 2026
Reduced
Hedge Fund
$541K· 0.0% of total· 0.0% port· 700 sh· $-39.8M QoQ· Q1 2026
Reduced
Institutional Manager
$494K· 0.0% of total· 0.0% port· 639 sh· $-8K QoQ· Q1 2026
New
Hedge Fund
$323K· 0.0% of total· 0.0% port· 616 sh· — QoQ· Q2 2025
Added
Hedge Fund
$273K· 0.0% of total· 0.0% port· 353 sh· +$195K QoQ· Q1 2026
Reduced
Hedge Fund
$258K· 0.0% of total· 0.0% port· 334 sh· $-2.7M QoQ· Q1 2026
Reduced
Hedge Fund
$225K· 0.0% of total· 0.0% port· 319 sh· $-2K QoQ· Q1 2026
Added
Hedge Fund
$68K· 0.0% of total· 0.0% port· 89 sh· +$60K QoQ· Q1 2026
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