Regeneron Pharmaceuticals Ownership | Who Owns Regeneron Pharmaceuticals?

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Regeneron Pharmaceuticals Ownership Summary

Regeneron Pharmaceuticals is owned by 84.97% institutional investors, 1.93% insiders, and 13.10% retail investors. Vanguard group is the largest institutional shareholder, holding 8.61% of REGN shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.15% of its assets in Regeneron Pharmaceuticals shares.

REGN Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Regeneron Pharmaceuticals	84.97%	1.93%	13.10%
Sector	Healthcare Stocks	492.67%	11.09%	-403.76%
Industry	Biotech Stocks	295.31%	11.22%	-206.53%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Vanguard group	9.05M	8.61%	$5.09B
Blackrock funding, inc. /de	8.84M	8.41%	$4.97B
Blackrock	8.45M	7.84%	$8.88B
State street	4.69M	4.46%	$2.64B
Dodge & cox	4.55M	4.33%	$2.56B
Jpmorgan chase	4.07M	3.87%	$2.29B
Geode capital management	2.54M	2.41%	$1.42B
Franklin resources	2.45M	2.33%	$1.38B
Capital world investors	2.00M	1.90%	$1.12B
Loomis sayles & co l p	1.98M	1.88%	$1.11B

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Bronte capital management pty	180.28K	10.14%	$113.28M
R.p. boggs	29.75K	7.59%	$16.72M
Mcdonald capital investors inc/ca	213.33K	7.46%	$119.95M
Rk asset management	12.65K	6.46%	$7.11M
Solas capital management	18.22K	6.25%	$10.24M
Orion investment	30.64K	5.47%	$17.23M
Diadema partners lp	30.16K	4.34%	$16.96M
Southeastern asset management inc/tn/	144.61K	4.15%	$81.31M
Guoline advisory pte	67.30K	3.77%	$37.84M
Catalio capital management, lp	35.34K	3.67%	$19.87M

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	1.13M	0.11%	1.13M
Dodge & cox	4.55M	1.38%	724.56K
Invesco	1.48M	0.13%	408.65K
Nuveen	1.18M	0.17%	333.73K
Caisse de depot et placement du quebec	462.50K	0.47%	247.78K

Top Sellers

Holder	Shares	% Assets	Change
Capital investors	876.56K	0.08%	-2.29M
Fmr	1.94M	0.06%	-1.39M
Blackrock funding, inc. /de	8.84M	0.09%	-438.91K
Vanguard group	9.05M	0.08%	-375.78K
Amundi	621.74K	0.12%	-275.39K

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	1.13M	0.11%	1.13M	$802.04M
Holocene advisors, lp	151.73K	0.19%	151.73K	$85.31M
Sound shore management inc /ct/	115.03K	2.14%	115.03K	$64.68M
Axa investment managers	62.29K	0.09%	62.29K	$35.02M
Rakuten investment management	58.91K	0.02%	58.91K	$4.89M

Sold Out

Holder	Change
Proffitt & goodson	-1.00
Greenline partners	-1.00
Financial gravity asset management	-1.00
Triad wealth partners	-1.00
Coastline trust	-1.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2025	1,254	-5.93%	89,298,391	-2.58%	84	1.15%	562	-14.07%	469	2.85%
Mar 31, 2025	18	-98.69%	558,121	-99.40%	-	0.01%	7	-98.90%	3	-99.38%
Dec 31, 2024	1,243	-13.68%	85,658,993	-7.35%	79	1.08%	578	-12.82%	435	-4.81%
Sep 30, 2024	1,416	2.98%	92,708,421	-1.26%	85	1.14%	652	-1.06%	448	4.92%
Jun 30, 2024	1,358	-0.29%	93,841,367	2.15%	87	1.20%	650	4.67%	422	-5.59%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard Total Stock Mkt Idx Inv	3.34M	3.15%	-77.26K
Vanguard US Total Market Shares ETF	3.44M	3.14%	178.74K
Vanguard Institutional 500 Index Trust	2.99M	2.77%	22.25K
Vanguard 500 Index Investor	2.57M	2.43%	-376.58K
Dodge & Cox Stock I	2.49M	2.31%	937.70K
Invesco QQQ Trust	2.19M	2.06%	15.22K
Fidelity 500 Index	1.32M	1.24%	565.00
Fidelity Contrafund	1.28M	1.21%	-370.76K
SPDR® S&P 500 ETF	1.31M	1.20%	-19.22K
SPDR® S&P 500® ETF	1.25M	1.18%	15.43K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Nov 07, 2025	Pitofsky Jason	VP Controller	Sell	$280.77K
Oct 29, 2025	POON CHRISTINE A	-	Sell	$1.25M
Oct 29, 2025	POON CHRISTINE A	-	Sell	$65.51K
Oct 29, 2025	POON CHRISTINE A	-	Sell	$467.43K
Oct 29, 2025	POON CHRISTINE A	-	Sell	$1.79M

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	-	6
2025 Q1	-	-
2024 Q4	-	19
2024 Q3	-	117
2024 Q2	-	113

REGN Ownership FAQ

Who Owns Regeneron Pharmaceuticals?

Regeneron Pharmaceuticals shareholders are primarily institutional investors at 84.97%, followed by 1.93% insiders and 13.10% retail investors. The average institutional ownership in Regeneron Pharmaceuticals's industry, Biotech Stocks , is 295.31%, which Regeneron Pharmaceuticals falls below.

Who owns the most shares of Regeneron Pharmaceuticals?

Regeneron Pharmaceuticals’s largest shareholders are Vanguard group (9.05M shares, 8.61%), Blackrock funding, inc. /de (8.84M shares, 8.41%), and Blackrock (8.45M shares, 7.84%). Together, they hold 24.85% of Regeneron Pharmaceuticals’s total shares outstanding.

Does Blackrock own Regeneron Pharmaceuticals?

Yes, BlackRock owns 7.84% of Regeneron Pharmaceuticals, totaling 8.45M shares as of Jun 2024. This represents 0.20% of BlackRock's total assets, with a market value of 8.88B$. In the last quarter, BlackRock decreased its holdings by -122K shares, a -1.43% change.

Who is Regeneron Pharmaceuticals’s biggest shareholder by percentage of total assets invested?

Bronte capital management pty is Regeneron Pharmaceuticals’s biggest shareholder by percentage of total assets invested, with 10.14% of its assets in 180.28K Regeneron Pharmaceuticals shares, valued at 113.28M$.

Who is the top mutual fund holder of Regeneron Pharmaceuticals shares?

Vanguard Total Stock Mkt Idx Inv is the top mutual fund holder of Regeneron Pharmaceuticals shares, with 3.15% of its total shares outstanding invested in 3.34M Regeneron Pharmaceuticals shares.

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