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
Fideuram - Intesa Sanpaolo Private Banking S.P.A.	–	–	–	–	Not filed
Engineers Gate Manager LP	–	–	–	–	Not filed
Sector Gamma AS	–	–	–	–	Not filed
Aware Super Pty Ltd as trustee of Aware Super	–	–	–	–	Not filed
British Columbia Investment Management Corp	–	–	–	–	Not filed
Eurizon Capital SGR S.p.A.	–	–	–	–	Not filed
CenterBook Partners LP	–	–	–	–	Not filed
Utah Retirement Systems	–	–	–	–	Not filed
ASR Vermogensbeheer N.V.	–	–	–	–	Not filed
Police & Firemen's Retirement System of New Jersey	–	–	–	–	Not filed
Mediolanum International Funds Ltd	–	–	–	–	Not filed
Sierra Summit Advisors LLC	–	–	–	–	Not filed
Commonwealth Equity Services, LLC	–	–	–	–	Not filed
Cetera Investment Advisers	–	–	–	–	Not filed
Charter Trust Co	–	–	–	–	Not filed
South Dakota Investment Council	–	–	–	–	Not filed
Nomura Holdings Inc	–	–	–	–	Not filed
Sumitomo Mitsui DS Asset Management Company, Ltd	–	–	–	–	Not filed
Colony Group, LLC	–	–	–	–	Not filed
Fagan Associates, Inc.	–	–	–	–	Not filed
Greenwood Capital Associates LLC	–	–	–	–	Not filed
Pathstone Holdings, LLC	–	–	–	–	Not filed
Applied Finance Capital Management, LLC	–	–	–	–	Not filed
Capital International Ltd	–	–	–	–	Not filed
Quantitative Investment Management, LLC	–	–	–	–	Not filed
Public Employees Retirement Association of Colorado	–	–	–	–	Not filed
Capital International Inc	–	–	–	–	Not filed
Univest Financial Corp	–	–	–	–	Not filed
Elo Mutual Pension Insurance Co	–	–	–	–	Not filed
Thompson Siegel & Walmsley LLC	–	–	–	–	Not filed
M. Kulyk & Associates, LLC	–	–	–	–	Not filed
Marietta Wealth Management, LLC	–	–	–	–	Not filed
Assetmark, Inc	–	–	–	–	Not filed
United Super Pty Ltd in its capacity as Trustee for the Construction & Building Unions Superannuation Fund	–	–	–	–	Not filed
CI Private Wealth, LLC	–	–	–	–	Not filed
Advisor Group Holdings, Inc.	–	–	–	–	Not filed
Oregon Public Employees Retirement Fund	–	–	–	–	Not filed
Janney Montgomery Scott LLC	–	–	–	–	Not filed
GWM Advisors LLC	–	–	–	–	Not filed
Ilmarinen Mutual Pension Insurance Co	–	–	–	–	Not filed
JustInvest LLC	–	–	–	–	Not filed
Louisiana State Employees Retirement System	–	–	–	–	Not filed
Azimuth Capital Investment Management LLC	–	–	–	–	Not filed
OP Asset Management Ltd	–	–	–	–	Not filed
Lido Advisors, LLC	–	–	–	–	Not filed
Calamos Advisors LLC	–	–	–	–	Not filed
Avanza Fonder AB	–	–	–	–	Not filed
Shelton Capital Management	–	–	–	–	Not filed
Walleye Trading LLC	–	–	–	–	Not filed
UniSuper Management Pty Ltd	–	–	–	–	Not filed
Biondo Investment Advisors, LLC	–	–	–	–	Not filed
Federation des caisses Desjardins du Quebec	–	–	–	–	Not filed
Horizon Investments, LLC	–	–	–	–	Not filed
NorthCrest Asset Manangement, LLC	–	–	–	–	Not filed
Slow Capital, Inc.	–	–	–	–	Not filed
Atria Investments LLC	–	–	–	–	Not filed
Oak Associates, Ltd	–	–	–	–	Not filed
Headlands Technologies LLC	–	–	–	–	Not filed
Profund Advisors LLC	–	–	–	–	Not filed
Jacobs & Co	–	–	–	–	Not filed
Hunter Perkins Capital Management, LLC	–	–	–	–	Not filed
Ossiam	–	–	–	–	Not filed
Mutual of America Capital Management LLC	–	–	–	–	Not filed
Contravisory Investment Management, Inc.	–	–	–	–	Not filed
Callan Family Office, LLC	–	–	–	–	Not filed
Omers Administration Corp	–	–	–	–	Not filed
Pinebridge Investments LLC	–	–	–	–	Not filed
Sterling Capital Management LLC	–	–	–	–	Not filed
Pavaki Capital Management LLC	–	–	–	–	Not filed
Campbell & CO Investment Adviser LLC	–	–	–	–	Not filed
Norinchukin Bank, The	–	–	–	–	Not filed
Entropy Technologies, LP	–	–	–	–	Not filed
Massmutual Trust Co FSB	–	–	–	–	Not filed
SRS Capital Advisors, Inc.	–	–	–	–	Not filed
AIMZ Investment Advisors, LLC	–	–	–	–	Not filed
Balyasny Asset Management LLC	–	–	–	–	Not filed
O'Shaughnessy Asset Management, LLC	–	–	–	–	Not filed
Leuthold Group, LLC	–	–	–	–	Not filed
DCF Advisers, LLC	–	–	–	–	Not filed
Kayne Anderson Rudnick Investment Management LLC	–	–	–	–	Not filed
Osprey Private Wealth LLC	–	–	–	–	Not filed
MUFG Securities EMEA plc	–	–	–	–	Not filed
Yousif Capital Management, LLC	–	–	–	–	Not filed
Insight Wealth Strategies, LLC	–	–	–	–	Not filed
AIA Group Ltd	–	–	–	–	Not filed
Stratos Wealth Advisors, LLC	–	–	–	–	Not filed
Voleon Capital Management LP	–	–	–	–	Not filed
Evergreen Wealth Management, LLC	–	–	–	–	Not filed
Hudson Capital Management LLC	–	–	–	–	Not filed
Cardinal Capital Management	–	–	–	–	Not filed
Founders Capital Management, LLC	–	–	–	–	Not filed
JB Capital LLC	–	–	–	–	Not filed
Fiduciary Trust Co	–	–	–	–	Not filed
Ellerson Group Inc	–	–	–	–	Not filed
Teachers Retirement System of the State of Kentucky	–	–	–	–	Not filed
Third View Private Wealth, LLC	–	–	–	–	Not filed
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