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
MQS Management LLC	–	–	–	–	Not filed
Deroy & Devereaux Private Investment Counsel Inc	–	–	–	–	Not filed
Centiva Capital, LP	–	–	–	–	Not filed
Alta Advisers Ltd	–	–	–	–	Not filed
Bridgewater Advisors Inc.	–	–	–	–	Not filed
Prosperity Consulting Group, LLC	–	–	–	–	Not filed
Physicians Financial Services, Inc.	–	–	–	–	Not filed
Wealth Group, Ltd.	–	–	–	–	Not filed
Fukoku Mutual Life Insurance Co	–	–	–	–	Not filed
Level Four Advisory Services, LLC	–	–	–	–	Not filed
Defiance ETFs, LLC	–	–	–	–	Not filed
Kovack Advisors, Inc.	–	–	–	–	Not filed
Sax Wealth Advisors, LLC	–	–	–	–	Not filed
Hirtle Callaghan & Co LLC	–	–	–	–	Not filed
Riversedge Advisors, LLC	–	–	–	–	Not filed
Marex Group plc	–	–	–	–	Not filed
Klingman & Associates, LLC	–	–	–	–	Not filed
Gradient Capital Advisors, LLC	–	–	–	–	Not filed
Gladstone Institutional Advisory LLC	–	–	–	–	Not filed
Papamarkou Wellner Asset Management inc.	–	–	–	–	Not filed
Petersen Hastings Wealth Advisors Inc.	–	–	–	–	Not filed
Rock Point Advisors, LLC	–	–	–	–	Not filed
Great Valley Advisor Group, Inc.	–	–	–	–	Not filed
Kera Capital Partners, Inc.	–	–	–	–	Not filed
Gateway Investment Advisers LLC	–	–	–	–	Not filed
Adirondack Trust Co	–	–	–	–	Not filed
Stratos Wealth Partners, LTD.	–	–	–	–	Not filed
Flatrock Wealth Partners LLC	–	–	–	–	Not filed
Advisors Capital Management, LLC	–	–	–	–	Not filed
MMBG Investment Advisors Co.	–	–	–	–	Not filed
SmartHarvest Portfolios, LLC	–	–	–	–	Not filed
Phraction Management LLC	–	–	–	–	Not filed
Intrust Bank NA	–	–	–	–	Not filed
Bartlett & Co. Wealth Management LLC	–	–	–	–	Not filed
Swiss Re Ltd	–	–	–	–	Not filed
HBK Sorce Advisory LLC	–	–	–	–	Not filed
Private Wealth Partners, LLC	–	–	–	–	Not filed
Bouchey Financial Group Ltd	–	–	–	–	Not filed
Perennial Investment Advisors, LLC	–	–	–	–	Not filed
Arvest Bank Trust Division	–	–	–	–	Not filed
Claret Asset Management Corp	–	–	–	–	Not filed
Cora Capital Advisors LLC	–	–	–	–	Not filed
Catalyst Financial Partners LLC	–	–	–	–	Not filed
PEAK6 LLC	–	–	–	–	Not filed
Fielder Capital Group LLC	–	–	–	–	Not filed
Tribridge Partners Financial LLC	–	–	–	–	Not filed
Private Capital Advisors, Inc.	–	–	–	–	Not filed
GLR Partners, LLC	–	–	–	–	Not filed
Keel Point, LLC	–	–	–	–	Not filed
Optas, LLC	–	–	–	–	Not filed
Eads & Heald Wealth Management	–	–	–	–	Not filed
Cromwell Holdings LLC	–	–	–	–	Not filed
Green Alpha Advisors, LLC	–	–	–	–	Not filed
Anchyra Partners LLC	–	–	–	–	Not filed
Opal Wealth Advisors, LLC	–	–	–	–	Not filed
Waterloo Capital, L.P.	–	–	–	–	Not filed
Turtle Creek Wealth Advisors, LLC	–	–	–	–	Not filed
Rooted Wealth Advisors, Inc.	–	–	–	–	Not filed
GK Wealth Management LLC	–	–	–	–	Not filed
United Advisor Group, LLC	–	–	–	–	Not filed
Towarzystwo Funduszy Inwestycyjnych Pzu SA	–	–	–	–	Not filed
Morse Asset Management, Inc	–	–	–	–	Not filed
Morgan Creek Capital Management, LLC	–	–	–	–	Not filed
Independence Bank of Kentucky	–	–	–	–	Not filed
TRB Wealth Management, LLC	–	–	–	–	Not filed
Ascent Group, LLC	–	–	–	–	Not filed
Texas Capital Bank Wealth Management Services Inc	–	–	–	–	Not filed
S Harris Financial Group, LLC	–	–	–	–	Not filed
McLean Asset Management Corp	–	–	–	–	Not filed
Smithfield Trust Co	–	–	–	–	Not filed
Penserra Capital Management LLC	–	–	–	–	Not filed
CoreCap Advisors, LLC	–	–	–	–	Not filed
Quent Capital, LLC	–	–	–	–	Not filed
SBI Securities Co., Ltd.	–	–	–	–	Not filed
Rexford Capital Inc	–	–	–	–	Not filed
Onefund, LLC	–	–	–	–	Not filed
Whittier Trust Co	–	–	–	–	Not filed
Aventura Private Wealth, LLC	–	–	–	–	Not filed
Ninety One UK Ltd	–	–	–	–	Not filed
Kelly Lawrence W & Associates Inc	–	–	–	–	Not filed
Vanguard National Trust Co	–	–	–	–	Not filed
Banque Transatlantique SA	–	–	–	–	Not filed
Estabrook Capital Management	–	–	–	–	Not filed
Private Trust Co NA	–	–	–	–	Not filed
Syntax Research, Inc.	–	–	–	–	Not filed
Vision Retirement, LLC	–	–	–	–	Not filed
Rossby Financial, LCC	–	–	–	–	Not filed
Murphy & Mullick Capital Management Corp	–	–	–	–	Not filed
AdvisorNet Financial, Inc	–	–	–	–	Not filed
True Wealth Design, LLC	–	–	–	–	Not filed
Key Financial Inc	–	–	–	–	Not filed
Keating Financial Advisory Services, Inc.	–	–	–	–	Not filed
Provenance Wealth Advisors, LLC	–	–	–	–	Not filed
Centaurus Financial, Inc.	–	–	–	–	Not filed
Financial Perspectives, Inc	–	–	–	–	Not filed
Steigerwald, Gordon & Koch Inc.	–	–	–	–	Not filed
Custom Index Systems, LLC	–	–	–	–	Not filed
Anchor Investment Management, LLC	–	–	–	–	Not filed
Westside Investment Management, Inc.	–	–	–	–	Not filed
Corient IA LLC	–	–	–	–	Not filed