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: 6; 0 vs. Q2 2026
Shares held: 1.14K; +306 (+36.8%) vs. Q2 2026
Total value: $863.1K; +$344.3K (+66.4%) vs. Q2 2026
New holders: 0; 2 more added
Sold out: 0; 0 more reduced

1,336 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
Harvest Fund Management Co., Ltd	–	–	–	–	Not filed
Gulf International Bank (UK) Ltd	–	–	–	–	Not filed
Mizuho Securities USA LLC	–	–	–	–	Not filed
Vident Advisory, LLC	–	–	–	–	Not filed
Dana Investment Advisors, Inc.	–	–	–	–	Not filed
Generali Asset Management SPA SGR	–	–	–	–	Not filed
Investment Management Corp of Ontario	–	–	–	–	Not filed
Clear Harbor Asset Management, LLC	–	–	–	–	Not filed
Summit Global Investments	–	–	–	–	Not filed
Saudi Central Bank	–	–	–	–	Not filed
Perigon Wealth Management, LLC	–	–	–	–	Not filed
Meeder Asset Management Inc	–	–	–	–	Not filed
Gilman Hill Asset Management, LLC	–	–	–	–	Not filed
Commerce Bank	–	–	–	–	Not filed
Westpac Banking Corp	–	–	–	–	Not filed
Wealthspire Advisors, LLC	–	–	–	–	Not filed
Wealthfront Advisers LLC	–	–	–	–	Not filed
J. Goldman & Co LP	–	–	–	–	Not filed
Sicart Associates LLC	–	–	–	–	Not filed
Augustine Asset Management Inc	–	–	–	–	Not filed
Allstate Corp	–	–	–	–	Not filed
MAI Capital Management	–	–	–	–	Not filed
Modera Wealth Management, LLC	–	–	–	–	Not filed
Apollon Wealth Management, LLC	–	–	–	–	Not filed
Natixis	–	–	–	–	Not filed
Kentucky Retirement Systems	–	–	–	–	Not filed
Ledyard National Bank	–	–	–	–	Not filed
Fideuram Asset Management (Ireland) dac	–	–	–	–	Not filed
Arnhold LLC	–	–	–	–	Not filed
Abn Amro Investment Solutions	–	–	–	–	Not filed
Unison Advisors LLC	–	–	–	–	Not filed
Krensavage Asset Management, LLC	–	–	–	–	Not filed
Lombard Odier Asset Management (Europe) Ltd	–	–	–	–	Not filed
PKO Investment Management Joint-Stock Co	–	–	–	–	Not filed
Prudential PLC	–	–	–	–	Not filed
Two Sigma Securities, LLC	–	–	–	–	Not filed
Kovitz Investment Group Partners, LLC	–	–	–	–	Not filed
Madison Asset Management, LLC	–	–	–	–	Not filed
Jane Street Group, LLC	–	–	–	–	Not filed
IMC-Chicago, LLC	–	–	–	–	Not filed
Warren Averett Asset Management, LLC	–	–	–	–	Not filed
Veracity Capital LLC	–	–	–	–	Not filed
Hartford Investment Management Co	–	–	–	–	Not filed
Maryland State Retirement & Pension System	–	–	–	–	Not filed
RSM US Wealth Management LLC	–	–	–	–	Not filed
Te Ahumairangi Investment Management Ltd	–	–	–	–	Not filed
Tema ETFs LLC	–	–	–	–	Not filed
Wiley Bros.-Aintree Capital, LLC	–	–	–	–	Not filed
Oxbow Advisors, LLC	–	–	–	–	Not filed
RMR Wealth Builders	–	–	–	–	Not filed
US Bancorp	–	–	–	–	Not filed
Brown Advisory Inc	–	–	–	–	Not filed
Hussman Strategic Advisors, Inc.	–	–	–	–	Not filed
Arkadios Wealth Advisors	–	–	–	–	Not filed
Easterly Investment Partners LLC	–	–	–	–	Not filed
E Fund Management Co., Ltd.	–	–	–	–	Not filed
Steward Partners Investment Advisory, LLC	–	–	–	–	Not filed
BI Asset Management Fondsmaeglerselskab A/S	–	–	–	–	Not filed
Linden Thomas Advisory Services, LLC	–	–	–	–	Not filed
Northwestern Mutual Wealth Management Co	–	–	–	–	Not filed
Siemens Fonds Invest GmbH	–	–	–	–	Not filed
Encore Global Management, LP	–	–	–	–	Not filed
New Mexico Educational Retirement Board	–	–	–	–	Not filed
JBF Capital, Inc.	–	–	–	–	Not filed
Peak Wealth Management LLC	–	–	–	–	Not filed
Harvey Capital Management Inc	–	–	–	–	Not filed
Sivik Global Healthcare LLC	–	–	–	–	Not filed
Agf Management Ltd	–	–	–	–	Not filed
Pine Valley Investments Ltd Liability Co	–	–	–	–	Not filed
B & T Capital Management DBA Alpha Capital Management	–	–	–	–	Not filed
Victrix Investment Advisors	–	–	–	–	Not filed
Asio Capital, LLC	–	–	–	–	Not filed
Schonfeld Strategic Advisors LLC	–	–	–	–	Not filed
AG2R la Mondiale Gestion D'Actifs	–	–	–	–	Not filed
Miracle Mile Advisors, LLC	–	–	–	–	Not filed
Sanibel Captiva Trust Company, Inc.	–	–	–	–	Not filed
Exchange Traded Concepts, LLC	–	–	–	–	Not filed
Ameritas Investment Partners, Inc.	–	–	–	–	Not filed
Cambridge Investment Research Advisors, Inc.	–	–	–	–	Not filed
Dai-Ichi Life Insurance Company, Ltd	–	–	–	–	Not filed
M&T Bank Corp	–	–	–	–	Not filed
Global X Japan Co., Ltd.	–	–	–	–	Not filed
B. Metzler seel. Sohn & Co. AG	–	–	–	–	Not filed
Sepio Capital, LP	–	–	–	–	Not filed
Glenview Trust Co	–	–	–	–	Not filed
Citizens Financial Group Inc	–	–	–	–	Not filed
Brighton Jones LLC	–	–	–	–	Not filed
Virtus Investment Advisers, Inc.	–	–	–	–	Not filed
Moran Wealth Management, LLC	–	–	–	–	Not filed
Advisory Services Network, LLC	–	–	–	–	Not filed
Simmons Bank	–	–	–	–	Not filed
Edgestream Partners, L.P.	–	–	–	–	Not filed
Sarissa Capital Management LP	–	–	–	–	Not filed
Atlantic Union Bankshares Corp	–	–	–	–	Not filed
Savant Capital, LLC	–	–	–	–	Not filed
Tokio Marine Asset Management Co Ltd	–	–	–	–	Not filed
Prospera Financial Services Inc	–	–	–	–	Not filed
Dillon & Associates Inc	–	–	–	–	Not filed
Militia Capital Management LLC	–	–	–	–	Not filed
Cito Capital Group, LLC	–	–	–	–	Not filed