REGENERON PHARMACEUTICALS REGN
COM · Common Stock · CUSIP 75886F107 · ISIN US75886F1075
American pharmaceutical company
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersTarrytown, NY
- Founded1988
- Websiteregeneron.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($189.6m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $633.84. Options: 39 managers hold calls ($976.3m notional), 39 hold puts ($999.5m).
Trends to Q1 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 1,080 |
| Q4 2022 | 1,159 |
| Q1 2023 | 1,195 |
| Q2 2023 | 1,168 |
| Q3 2023 | 1,182 |
| Q4 2023 | 1,275 |
| Q1 2024 | 1,313 |
| Q2 2024 | 1,335 |
| Q3 2024 | 1,393 |
| Q4 2024 | 1,320 |
| Q1 2025 | 1,292 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2023 | 478 | 575 |
| Q3 2023 | 498 | 535 |
| Q4 2023 | 545 | 515 |
| Q1 2024 | 615 | 545 |
| Q2 2024 | 656 | 514 |
| Q3 2024 | 662 | 533 |
| Q4 2024 | 561 | 709 |
| Q1 2025 | 650 | 603 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q2 2024 | $1.1bn | $1.6bn | 1.47 |
| Q3 2024 | $1.5bn | $1.9bn | 1.29 |
| Q4 2024 | $1.2bn | $1.2bn | 0.98 |
| Q1 2025 | $976.3m | $999.5m | 1.02 |
Biggest buyers
| TWO SIGMA ADVISERS, LP | New | +553.8k |
| Pacer Advisors, Inc. | Added | +390.4k |
| TWO SIGMA INVESTMENTS, LP | Added | +337.5k |
| Assenagon Asset Management S.A. | Added | +303.8k |
| Qube Research & Technologies Ltd | Added | +261.2k |
| FRANKLIN RESOURCES INC | Added | +231.5k |
| VOYA INVESTMENT MANAGEMENT LLC | Added | +224.7k |
| BlackRock, Inc. | Added | +194.3k |
| GOLDMAN SACHS GROUP INC | Added | +192.5k |
| VANGUARD GROUP INC | Added | +121.5k |
Biggest sellers
| JPMORGAN CHASE & CO | Reduced | -1.4m |
| Capital World Investors | Reduced | -840.3k |
| Capital International Investors | Reduced | -747.8k |
| FMR LLC | Reduced | -601.0k |
| MORGAN STANLEY | Reduced | -179.4k |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | -168.8k |
| FIRST TRUST ADVISORS LP | Reduced | -158.7k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -131.4k |
| MARSHALL WACE, LLP | Reduced | -126.0k |
| CITADEL ADVISORS LLC | Reduced | -117.4k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $247.2m389.8k shares |
| GOLDMAN SACHS GROUP INC | Reduced | $178.6m281.6k shares |
| CITADEL ADVISORS LLC | Added | $144.6m228.0k shares |
| IMC-Chicago, LLC | Added | $46.7m73.7k shares |
| JANE STREET GROUP, LLC | Added | $36.5m57.5k shares |
| WOLVERINE TRADING, LLC | Added | $33.8m53.0k shares |
| CAPITAL FUND MANAGEMENT S.A. | Added | $31.3m49.4k shares |
| MILLENNIUM MANAGEMENT LLC | Added | $26.9m42.4k shares |
| D. E. Shaw & Co., Inc. | Reduced | $24.3m38.3k shares |
| MARSHALL WACE, LLP | New | $23.1m36.5k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $334.2m527.0k shares |
| CITADEL ADVISORS LLC | Reduced | $120.1m189.4k shares |
| CAPITAL FUND MANAGEMENT S.A. | Added | $50.5m79.7k shares |
| IMC-Chicago, LLC | Added | $44.5m70.2k shares |
| BNP PARIBAS FINANCIAL MARKETS | First filing | $43.6m687 shares |
| UBS Group AG | Reduced | $37.2m58.7k shares |
| Balyasny Asset Management L.P. | Reduced | $35.1m55.4k shares |
| Qube Research & Technologies Ltd | Added | $34.9m55.1k shares |
| WOLVERINE TRADING, LLC | Added | $34.7m54.5k shares |
| MILLENNIUM MANAGEMENT LLC | Reduced | $25.9m40.9k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 7.4% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q1 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q2 2023 | 0 | — | 3 | $3.8m | $3.8m |
| Q3 2023 | 0 | — | 7 | $27.6m | $2.1m |
| Q4 2023 | 0 | — | 7 | $19.5m | $19.5m |
| Q1 2024 | 0 | — | 12 | $59.1m | $26.9m |
| Q2 2024 | 0 | — | 7 | $189.5m | $189.5m |
| Q3 2024 | 0 | — | 9 | $40.6m | $20.6m |
| Q4 2024 | 0 | — | 2 | $2.0m | $2.0m |
| Q1 2025 | 0 | — | 0 | — | — |
None reported in Q1 2025.
Holders, Q1 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.11% of their portfolio | 9.4m $6.0bn | Added +121.5k |
| BlackRock, Inc. 0.12% of their portfolio | 8.9m $5.7bn | Added +194.3k |
| FMR LLC 0.31% of their portfolio | 7.6m $4.8bn | Reduced -601.0k |
| JPMORGAN CHASE & CO 0.27% of their portfolio | 5.7m $3.6bn | Reduced -1.4m |
| STATE STREET CORP 0.13% of their portfolio | 4.8m $3.0bn | Reduced -42.6k |
| Capital International Investors 0.50% of their portfolio | 4.0m $2.5bn | Reduced -747.8k |
| GEODE CAPITAL MANAGEMENT, LLC 0.12% of their portfolio | 2.5m $1.6bn | Added +42.0k |
| Dodge & Cox 0.84% of their portfolio | 2.3m $1.5bn | Added +2.8k |
| FRANKLIN RESOURCES INC 0.42% of their portfolio | 2.3m $1.4bn | Added +231.5k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.17% of their portfolio | 2.2m $1.4bn | Added +89.6k |
| Capital World Investors 0.20% of their portfolio | 1.9m $1.2bn | Reduced -840.3k |
| LOOMIS SAYLES & CO L P 1.50% of their portfolio | 1.6m $1.0bn | Added +60.6k |
| Amundi 0.36% of their portfolio | 1.6m $979.8m | Added +52.2k |
| MORGAN STANLEY 0.06% of their portfolio | 1.3m $793.4m | Reduced -179.4k |
| NORGES BANK 0.10% of their portfolio | 1.1m $715.7m | Added +2.6k |
| BANK OF AMERICA CORP /DE/ 0.06% of their portfolio | 1.0m $662.3m | Added +104.0k |
| NORTHERN TRUST CORP 0.09% of their portfolio | 1.0m $635.3m | Reduced -53.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.15% of their portfolio | 940.3k $596.4m | Reduced -41.7k |
| Invesco Ltd. 0.10% of their portfolio | 850.7k $539.6m | Reduced -13.5k |
| GOLDMAN SACHS GROUP INC 0.10% of their portfolio | 837.1k $530.9m | Added +192.5k |
| Legal & General Group Plc 0.13% of their portfolio | 747.0k $473.8m | Reduced -30.4k |
| BNP PARIBAS FINANCIAL MARKETS 0.36% of their portfolio | 746.6k $473.5m | First filing |
| AMERICAN CENTURY COMPANIES INC 0.28% of their portfolio | 722.5k $458.2m | Added +14.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.08% of their portfolio | 706.4k $448.0m | Added +10.6k |
| Qube Research & Technologies Ltd 0.69% of their portfolio | 702.9k $445.8m | Added +261.2k |
| Bank of New York Mellon Corp 0.09% of their portfolio | 698.3k $442.9m | Added +9.0k |
| ALLIANCEBERNSTEIN L.P. 0.14% of their portfolio | 609.6k $386.6m | Reduced -13.5k |
| D. E. Shaw & Co., Inc. 0.44% of their portfolio | 578.9k $367.1m | Added +78.7k |
| DIMENSIONAL FUND ADVISORS LP 0.09% of their portfolio | 571.2k $362.3m | Reduced -15.8k |
| TWO SIGMA ADVISERS, LP 0.79% of their portfolio | 553.8k $351.2m | New |
| DEUTSCHE BANK AG\ 0.14% of their portfolio | 543.1k $344.4m | Added +3.8k |
| Nuveen, LLC 0.10% of their portfolio | 542.0k $343.8m | First filing |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. 0.91% of their portfolio | 532.2k $337.6m | Added +20.7k |
| Assenagon Asset Management S.A. 0.54% of their portfolio | 481.4k $305.3m | Added +303.8k |
| California Public Employees Retirement System 0.21% of their portfolio | 473.4k $300.3m | Added +110.0k |
| NEUBERGER BERMAN GROUP LLC 0.23% of their portfolio | 436.5k $276.8m | Reduced -26.0k |
| Pacer Advisors, Inc. 0.61% of their portfolio | 407.4k $258.4m | Added +390.4k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.24% of their portfolio | 398.2k $252.6m | Added +41.8k |
| HSBC HOLDINGS PLC 0.16% of their portfolio | 389.6k $246.6m | Reduced -44.2k |
| VOYA INVESTMENT MANAGEMENT LLC 0.13% of their portfolio | 378.5k $240.0m | Added +224.7k |
| TWO SIGMA INVESTMENTS, LP 0.51% of their portfolio | 372.1k $236.0m | Added +337.5k |
| TD Asset Management Inc 0.21% of their portfolio | 351.9k $223.2m | Reduced -7.5k |
| AMERIPRISE FINANCIAL INC 0.06% of their portfolio | 340.1k $215.6m | Added +13.6k |
| BARCLAYS PLC 0.09% of their portfolio | 321.4k $203.8m | Reduced -63.8k |
| Swiss National Bank 0.14% of their portfolio | 304.8k $193.3m | Reduced -1.5k |
| Sumitomo Mitsui Trust Group, Inc. 0.14% of their portfolio | 303.7k $192.6m | Added +1.1k |
| Pictet Asset Management Holding SA 0.21% of their portfolio | 301.0k $191.2m | Added +86.9k |
| UBS Group AG 0.04% of their portfolio | 287.2k $182.1m | Reduced -95.7k |
| Squarepoint Ops LLC 0.44% of their portfolio | 284.0k $180.1m | Added +29.4k |
| National Pension Service 0.15% of their portfolio | 253.0k $160.5m | Added +20.6k |
| Aberdeen Group plc 0.30% of their portfolio | 245.2k $155.6m | Added +56.7k |
| AQR CAPITAL MANAGEMENT LLC 0.15% of their portfolio | 235.9k $148.7m | Added +28.9k |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.54% of their portfolio | 228.3k $144.8m | Added +16.1k |
| Caisse de depot et placement du Quebec 0.30% of their portfolio | 222.6k $141.2m | Reduced -87.5k |
| ABN AMRO Bank N.V. 1.94% of their portfolio | 221.5k $140.1m | Added +1.6k |
| Chevy Chase Trust Holdings, LLC 0.45% of their portfolio | 221.2k $140.3m | Reduced -8.6k |
| DekaBank Deutsche Girozentrale 0.27% of their portfolio | 221.2k $139.5m | Added +10.0k |
| Candriam S.C.A. 0.85% of their portfolio | 214.9k $136.3m | Reduced -46.6k |
| Epoch Investment Partners, Inc. 0.68% of their portfolio | 207.5k $131.6m | Added +10.2k |
| CANADA PENSION PLAN INVESTMENT BOARD 0.13% of their portfolio | 203.6k $129.1m | Reduced -39.9k |
| ROYAL BANK OF CANADA 0.03% of their portfolio | 203.2k $128.9m | Reduced -85.7k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.12% of their portfolio | 198.8k $126.1m | Added +21.8k |
| MCDONALD CAPITAL INVESTORS INC/CA 7.87% of their portfolio | 196.8k $124.8m | Added +26.6k |
| CITIGROUP INC 0.09% of their portfolio | 185.6k $117.7m | Added +49.1k |
| RHUMBLINE ADVISERS 0.10% of their portfolio | 173.2k $109.8m | Added +2.5k |
| MILLENNIUM MANAGEMENT LLC 0.10% of their portfolio | 169.6k $107.6m | Added +36.1k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.13% of their portfolio | 166.1k $105.3m | Reduced -1.8k |
| ProShare Advisors LLC 0.23% of their portfolio | 163.3k $103.6m | Added +17.2k |
| Universal- Beteiligungs- und Servicegesellschaft mbH 0.20% of their portfolio | 157.3k $99.7m | Reduced -21.3k |
| Bronte Capital Management Pty Ltd. 9.33% of their portfolio | 154.7k $114.8m | Added +1.9k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.16% of their portfolio | 151.5k $96.1m | Added +69.3k |
| KBC Group NV 0.29% of their portfolio | 149.4k $94.8m | Added +12.8k |
| Russell Investments Group, Ltd. 0.13% of their portfolio | 146.7k $93.1m | Added +9.5k |
| WELLS FARGO & COMPANY/MN 0.02% of their portfolio | 145.7k $92.4m | Reduced -6.8k |
| ACADIAN ASSET MANAGEMENT LLC 0.25% of their portfolio | 139.2k $88.2m | Added +56.8k |
| Thrivent Financial for Lutherans 0.19% of their portfolio | 138.3k $87.7m | Added +13.1k |
| Retirement Systems of Alabama 0.32% of their portfolio | 131.4k $83.3m | Added +108.6k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.12% of their portfolio | 130.5k $82.8m | Reduced -6.8k |
| WORLDQUANT MILLENNIUM ADVISORS LLC 0.52% of their portfolio | 129.8k $82.3m | Added +24.5k |
| PRINCIPAL FINANCIAL GROUP INC 0.05% of their portfolio | 129.6k $82.2m | Reduced -865 |
| TUDOR INVESTMENT CORP ET AL 0.71% of their portfolio | 126.1k $80.0m | Added +97.5k |
| CANADA LIFE ASSURANCE Co 0.14% of their portfolio | 124.6k $79.1m | Added +3.8k |
| BANK OF NOVA SCOTIA 0.17% of their portfolio | 122.6k $77.7m | Added +32.4k |
| ENVESTNET ASSET MANAGEMENT INC 0.02% of their portfolio | 116.7k $74.0m | Added +25.6k |
| NATIXIS ADVISORS, LLC 0.14% of their portfolio | 116.2k $73.7m | Added +6.3k |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ 3.88% of their portfolio | 114.9k $72.9m | New |
| ARMISTICE CAPITAL, LLC 1.93% of their portfolio | 114.1k $72.3m | Added +86.0k |
| FIRST TRUST ADVISORS LP 0.06% of their portfolio | 113.9k $72.3m | Reduced -158.7k |
| BANK OF MONTREAL /CAN/ 0.04% of their portfolio | 113.8k $72.2m | Reduced -39.5k |
| Robeco Institutional Asset Management B.V. 0.14% of their portfolio | 112.5k $71.3m | Reduced -16.8k |
| RAYMOND JAMES FINANCIAL INC 0.03% of their portfolio | 111.5k $70.7m | Added +20.0k |
| Capital Group Private Client Services, Inc. 0.69% of their portfolio | 111.0k $70.4m | Added +19.7k |
| Woodline Partners LP 0.44% of their portfolio | 106.2k $67.4m | Added +2.9k |
| ASSETMARK, INC 0.18% of their portfolio | 103.6k $65.7m | Added +2.7k |
| VIRGINIA RETIREMENT SYSTEMS ET Al 0.49% of their portfolio | 103.1k $65.4m | First filing |
| PANAGORA ASSET MANAGEMENT INC 0.33% of their portfolio | 102.9k $65.3m | Reduced -334 |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.13% of their portfolio | 102.7k $65.2m | Reduced -140 |
| NATIONAL BANK OF CANADA /FI/ 0.07% of their portfolio | 98.0k $62.1m | Reduced -5.7k |
| VIKING GLOBAL INVESTORS LP 0.20% of their portfolio | 97.7k $62.0m | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.18% of their portfolio | 97.4k $61.8m | Reduced -42.6k |