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
Plato Investment Management Ltd	–	–	–	–	Not filed
Leonteq Securities AG	–	–	–	–	Not filed
NLB Skladi, upravljanje premozenja, d.o.o.	–	–	–	–	Not filed
Royal London Asset Management Ltd	–	–	–	–	Not filed
E. Ohman J:or Asset Management AB	–	–	–	–	Not filed
Machina Capital S.A.S.	–	–	–	–	Not filed
Monarch Capital Management Inc	–	–	–	–	Not filed
Banque Pictet & Cie SA	–	–	–	–	Not filed
Polymer Capital Management (HK) LTD	–	–	–	–	Not filed
Quadrant Capital Group LLC	–	–	–	–	Not filed
Group One Trading, L.P.	–	–	–	–	Not filed
Legato Capital Management LLC	–	–	–	–	Not filed
Stiles Financial Services Inc	–	–	–	–	Not filed
Cache Advisors, LLC	–	–	–	–	Not filed
Murphy Pohlad Asset Management LLC	–	–	–	–	Not filed
New England Research & Management, Inc.	–	–	–	–	Not filed
Family Management Corp	–	–	–	–	Not filed
Bailard, Inc.	–	–	–	–	Not filed
Morningstar Investment Management LLC	–	–	–	–	Not filed
Merit Financial Group, LLC	–	–	–	–	Not filed
Tocqueville Asset Management L.P.	–	–	–	–	Not filed
Lombard Odier Asset Management (Switzerland) SA	–	–	–	–	Not filed
Verition Fund Management LLC	–	–	–	–	Not filed
Boothbay Fund Management, LLC	–	–	–	–	Not filed
Johnson Financial Group, Inc.	–	–	–	–	Not filed
Northwestern Mutual Investment Management Company, LLC	–	–	–	–	Not filed
Lockheed Martin Investment Management Co	–	–	–	–	Not filed
Y-Intercept (Hong Kong) Ltd	–	–	–	–	Not filed
111 Capital	–	–	–	–	Not filed
Simplex Trading, LLC	–	–	–	–	Not filed
Financiere des Professionnels - Fonds d,investissement inc.	–	–	–	–	Not filed
Summit Trail Advisors, LLC	–	–	–	–	Not filed
Element Squared LLC	–	–	–	–	Not filed
Howard Capital Management Inc.	–	–	–	–	Not filed
Greenfield Seitz Capital Management, LLC	–	–	–	–	Not filed
Joel Isaacson & Co., LLC	–	–	–	–	Not filed
First Foundation Advisors	–	–	–	–	Not filed
North Dakota State Investment Board	–	–	–	–	Not filed
MUFG Securities Americas Inc.	–	–	–	–	Not filed
BKD Wealth Advisors, LLC	–	–	–	–	Not filed
Traynor Capital Management, Inc.	–	–	–	–	Not filed
La Banque Postale Asset Management SA	–	–	–	–	Not filed
Maxi Investments CY Ltd	–	–	–	–	Not filed
American Assets Investment Management, LLC	–	–	–	–	Not filed
Triglav Skladi, D.O.O.	–	–	–	–	Not filed
Axq Capital, LP	–	–	–	–	Not filed
Sterling Investment Advisors, Ltd.	–	–	–	–	Not filed
Capital Group Investment Management Pte. Ltd.	–	–	–	–	Not filed
Heritage Trust Co	–	–	–	–	Not filed
Kestra Advisory Services, LLC	–	–	–	–	Not filed
Banque Cantonale Vaudoise	–	–	–	–	Not filed
Securian Asset Management, Inc	–	–	–	–	Not filed
Concurrent Investment Advisors, LLC	–	–	–	–	Not filed
Peapack Gladstone Financial Corp	–	–	–	–	Not filed
Harel Insurance Investments & Financial Services Ltd.	–	–	–	–	Not filed
Osmosis Investment Management UK Ltd	–	–	–	–	Not filed
Cresset Asset Management, LLC	–	–	–	–	Not filed
MASTERINVEST Kapitalanlage GmbH	–	–	–	–	Not filed
Snowden Capital Advisors LLC	–	–	–	–	Not filed
Game Creek Capital, LP	–	–	–	–	Not filed
Pinnacle Wealth Management Advisory Group, LLC	–	–	–	–	Not filed
HB Wealth Management, LLC	–	–	–	–	Not filed
Intellectus Partners, LLC	–	–	–	–	Not filed
Sequoia Financial Advisors, LLC	–	–	–	–	Not filed
Kentucky Retirement Systems Insurance Trust Fund	–	–	–	–	Not filed
United Capital Financial Advisers, LLC	–	–	–	–	Not filed
Benjamin Edwards Inc	–	–	–	–	Not filed
Meyer Handelman Co	–	–	–	–	Not filed
Shufro Rose & Co LLC	–	–	–	–	Not filed
Canada Post Corp Registered Pension Plan	–	–	–	–	Not filed
Sound View Wealth Advisors Group, LLC	–	–	–	–	Not filed
Dark Forest Capital Management LP	–	–	–	–	Not filed
Allworth Financial LP	–	–	–	–	Not filed
Blackstone Group Inc.	–	–	–	–	Not filed
Mezzasalma Advisors, LLC	–	–	–	–	Not filed
Diversified Trust Co	–	–	–	–	Not filed
Palouse Capital Management, Inc.	–	–	–	–	Not filed
Bluebird Wealth Management LLC	–	–	–	–	Not filed
Fayez Sarofim & Co	–	–	–	–	Not filed
Metis Global Partners, LLC	–	–	–	–	Not filed
CAPROCK Group, Inc.	–	–	–	–	Not filed
Laird Norton Trust Company, LLC	–	–	–	–	Not filed
Philadelphia Trust Co	–	–	–	–	Not filed
Perpetual Ltd	–	–	–	–	Not filed
Wahed Invest LLC	–	–	–	–	Not filed
Oppenheimer Asset Management Inc.	–	–	–	–	Not filed
Tobam	–	–	–	–	Not filed
Blair William & Co	–	–	–	–	Not filed
Harbor Investment Advisory, LLC	–	–	–	–	Not filed
Advisors Asset Management, Inc.	–	–	–	–	Not filed
Aster Capital Management (DIFC) Ltd	–	–	–	–	Not filed
Belpointe Asset Management LLC	–	–	–	–	Not filed
Generali Investments CEE, investicni spolecnost, a.s.	–	–	–	–	Not filed
Central Bank & Trust Co	–	–	–	–	Not filed
Tealwood Asset Management Inc	–	–	–	–	Not filed
Chicago Partners Investment Group LLC	–	–	–	–	Not filed
Integrated Wealth Concepts LLC	–	–	–	–	Not filed
Umpqua Bank	–	–	–	–	Not filed
Vestmark Advisory Solutions, Inc.	–	–	–	–	Not filed
Kornitzer Capital Management Inc	–	–	–	–	Not filed