Regeneron Pharmaceuticals, Inc.

REGN

Exchange: Nasdaq
Industry: Pharmaceutical Preparations
SEC CIK: 0000872589

SEC filings (opens in a new tab)

In the last 90 days, Regeneron Pharmaceuticals, Inc. insiders filed 0 open-market purchases and 5 sales; 1,342 institutions reported holding it in 13F filings for Q2 2026, worth $57.1B in total; Southeastern Asset Management (Longleaf) is the only superinvestor holding it.

13F holders, Q3 2026

Institutional positions in Regeneron Pharmaceuticals, Inc. as of Sep 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.

Institutional holders: 2; 0 vs. Q2 2026
Shares held: 70; 0 (0.0%) vs. Q2 2026
Total value: $53.1K; +$9.44K (+21.6%) vs. Q2 2026
New holders: 0; 0 more added
Sold out: 0; 0 more reduced

1,340 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting REGN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holders

Value held

Institutions holding REGN and their total value by quarter
Quarter	Holders	Value
Q2 2026	1,342	$57.1B
Q1 2026	1,401	$69.8B
Q4 2025	1,387	$70.7B
Q3 2025	1,243	$49.0B
Q2 2025	1,201	$46.9B
Q1 2025	1,290	$59.0B
Q4 2024	1,320	$66.6B
Q3 2024	1,393	$97.5B
Q2 2024	1,335	$98.9B
Q1 2024	1,313	$89.3B
Q4 2023	1,274	$80.3B
Q3 2023	1,180	$75.1B
Q2 2023	1,168	$66.2B
Q1 2023	1,196	$76.1B
Q4 2022	1,161	$66.9B
Q3 2022	1,081	$64.0B
Q2 2022	1,066	$55.0B
Q1 2022	1,097	$64.5B
Q4 2021	1,081	$56.9B
Q3 2021	1,022	$54.5B
Q2 2021	975	$49.6B
Q1 2021	926	$42.3B

Institutions, Q3 2026

Shares, value and share of portfolio for each institution holding Regeneron Pharmaceuticals, Inc.; share changes are against Q2 2026.

Institutions holding REGN in Q3 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
Victory Capital Management Inc	–	–	–	–	Not filed
Jupiter Asset Management Ltd	–	–	–	–	Not filed
National Bank of Canada	–	–	–	–	Not filed
Principal Financial Group Inc	–	–	–	–	Not filed
ProShare Advisors LLC	–	–	–	–	Not filed
New York State Common Retirement Fund	–	–	–	–	Not filed
Envestnet Asset Management Inc	–	–	–	–	Not filed
Danske Bank A/S	–	–	–	–	Not filed
Gotham Asset Management, LLC	–	–	–	–	Not filed
Harvest Portfolios Group Inc.	–	–	–	–	Not filed
Bank of Montreal	–	–	–	–	Not filed
Standard Life Aberdeen plc	–	–	–	–	Not filed
Universal- Beteiligungs- und Servicegesellschaft mbH	–	–	–	–	Not filed
Mariner, LLC	–	–	–	–	Not filed
Los Angeles Capital Management LLC	–	–	–	–	Not filed
Parnassus Investments	–	–	–	–	Not filed
Mirae Asset Global Investments Co., Ltd.	–	–	–	–	Not filed
Davern Capital Partners, LP	–	–	–	–	Not filed
PGGM Investments	–	–	–	–	Not filed
Aviva PLC	–	–	–	–	Not filed
PFA Pension, Forsikringsaktieselskab	–	–	–	–	Not filed
Armistice Capital, LLC	–	–	–	–	Not filed
State Board of Administration of Florida Retirement System	–	–	–	–	Not filed
Great West Life Assurance Co	–	–	–	–	Not filed
New York State Teachers Retirement System	–	–	–	–	Not filed
Healthcare of Ontario Pension Plan Trust Fund	–	–	–	–	Not filed
Adage Capital Partners GP, L.L.C.	–	–	–	–	Not filed
Pinnacle Associates Ltd	–	–	–	–	Not filed
Groupama Asset Managment	–	–	–	–	Not filed
NEOS Investment Management LLC	–	–	–	–	Not filed
Capitolis Liquid Global Markets LLC	–	–	–	–	Not filed
Korea Investment CORP	–	–	–	–	Not filed
Grantham, Mayo, Van Otterloo & Co. LLC	–	–	–	–	Not filed
Woodline Partners LP	–	–	–	–	Not filed
APG Asset Management N.V.	–	–	–	–	Not filed
KLP Kapitalforvaltning AS	–	–	–	–	Not filed
Seizert Capital Partners, LLC	–	–	–	–	Not filed
Allspring Global Investments Holdings, LLC	–	–	–	–	Not filed
Ceredex Value Advisors LLC	–	–	–	–	Not filed
GuoLine Advisory Pte Ltd	–	–	–	–	Not filed
Loring Wolcott & Coolidge Fiduciary Advisors LLP	–	–	–	–	Not filed
LPL Financial LLC	–	–	–	–	Not filed
Mitsubishi UFJ Trust & Banking Corp	–	–	–	–	Not filed
Voya Investment Management LLC	–	–	–	–	Not filed
Van Eck Associates Corp	–	–	–	–	Not filed
HighTower Advisors, LLC	–	–	–	–	Not filed
Zurcher Kantonalbank (Zurich Cantonalbank)	–	–	–	–	Not filed
Clearbridge Investments, LLC	–	–	–	–	Not filed
American Century Companies Inc	–	–	–	–	Not filed
SEI Investments Co	–	–	–	–	Not filed
Treasurer of the State of North Carolina	–	–	–	–	Not filed
Mirae Asset Global ETFs Holdings Ltd.	–	–	–	–	Not filed
Citadel Advisors LLC	–	–	–	–	Not filed
Cambiar Investors LLC	–	–	–	–	Not filed
State of Wisconsin Investment Board	–	–	–	–	Not filed
Vanguard Investments Australia, Ltd.	–	–	–	–	Not filed
Baird Financial Group, Inc.	–	–	–	–	Not filed
Handelsbanken Fonder AB	–	–	–	–	Not filed
Banco Santander, S.A.	–	–	–	–	Not filed
Asset Management One Co.,Ltd.	–	–	–	–	Not filed
Bridgewater Associates, LP	–	–	–	–	Not filed
DnB Asset Management AS	–	–	–	–	Not filed
Quadrature Capital Ltd	–	–	–	–	Not filed
Toronto Dominion Bank	–	–	–	–	Not filed
CBOE Vest Financial, LLC	–	–	–	–	Not filed
Ieq Capital, LLC	–	–	–	–	Not filed
Tredje AP-fonden	–	–	–	–	Not filed
Ensign Peak Advisors, Inc	–	–	–	–	Not filed
Wedge Capital Management L L P	–	–	–	–	Not filed
Quantinno Capital Management LP	–	–	–	–	Not filed
Nomura Asset Management International Inc.	–	–	–	–	Not filed
State of Tennessee, Treasury Department	–	–	–	–	Not filed
Stifel Financial Corp	–	–	–	–	Not filed
Guggenheim Capital LLC	–	–	–	–	Not filed
Public Sector Pension Investment Board	–	–	–	–	Not filed
ARS Investment Partners, LLC	–	–	–	–	Not filed
Toroso Investments, LLC	–	–	–	–	Not filed
Public Employees Retirement System of Ohio	–	–	–	–	Not filed
Fjarde Ap-Fonden /Fourth Swedish National Pension Fund	–	–	–	–	Not filed
Connor, Clark & Lunn Investment Management Ltd.	–	–	–	–	Not filed
Atwood & Palmer Inc	–	–	–	–	Not filed
Nomura Asset Management Co Ltd	–	–	–	–	Not filed
Trexquant Investment LP	–	–	–	–	Not filed
CIBC Asset Management Inc	–	–	–	–	Not filed
Integral Health Asset Management, LLC	–	–	–	–	Not filed
Vestal Point Capital, LP	–	–	–	–	Not filed
Sanctuary Advisors, LLC	–	–	–	–	Not filed
Cerity Partners LLC	–	–	–	–	Not filed
Erste Asset Management GmbH	–	–	–	–	Not filed
Credit Agricole S A	–	–	–	–	Not filed
DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main	–	–	–	–	Not filed
Truist Financial Corp	–	–	–	–	Not filed
Daiwa Securities Group Inc.	–	–	–	–	Not filed
Rafferty Asset Management, LLC	–	–	–	–	Not filed
Storebrand Asset Management AS	–	–	–	–	Not filed
D. E. Shaw & Co., Inc.	–	–	–	–	Not filed
Nykredit A/S	–	–	–	–	Not filed
Howland Capital Management LLC	–	–	–	–	Not filed
Tamar Securities, LLC	–	–	–	–	Not filed
Creative Planning	–	–	–	–	Not filed