Regeneron Pharmaceuticals, Inc. (REGN) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

107,700,000Shares Outstanding

88,716,286Shares held by institutions

$62,706,445,271Value of institutional holdings

82.37%Institutional ownership %

-1.58%Shares Changed QoQ

1,346No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Regeneron Pharmaceuticals, Inc. (NASDAQ:REGN) is held by 1,342 institutional investors per 13F filings through December 2025.

They owned 81.0% of outstanding stock in December 2025, down from 86.1% the prior quarter.
Their total shares held in REGN decreased -2.38% quarter over quarter, and separately, investors owning Regeneron Pharmaceuticals increased 4.03% from a year ago.
Among the 1,342 funds, 740 bought more Regeneron Pharmaceuticals shares, 454 sold down, and 148 held their ground.
Altogether, these fund groups held 87.25Mn shares in REGN by December 2025, down by 2.13Mn shares quarter on quarter, and down 9.47Mn shares year over year.
As of December 31, 2025, the biggest holder of Regeneron Pharmaceuticals is Robeco Institutional Asset Management B.V. at 348.79K shares, representing 0.32% of shares outstanding.
Top purchasers of REGN stock for the quarter ending December 2025 included Robeco Institutional Asset Management B.V. (86.94K), WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (37.6K), SG Americas Securities, LLC (27.17K), WestEnd Advisors, LLC (25.61K), Vest Financial, LLC (19.36K).
The largest sales of REGN for the quarter ending December 2025 came from Pictet Asset Management Holding SA (30.62K), Assenagon Asset Management S.A. (25.44K), LORING WOLCOTT & COOLIDGE FIDUCIARY ADVISORS LLP/MA (14.54K), BEACON INVESTMENT ADVISORY SERVICES, INC. (10.34K), Lansforsakringar Fondforvaltning AB (publ) (4.99K).
Business Quant data shows the 10 biggest positions in Regeneron Pharmaceuticals as of December 2025 are held by Robeco Institutional Asset Management B.V. (348.79K), Pictet Asset Management Holding SA (337.25K), Assenagon Asset Management S.A. (207.79K), SG Americas Securities, LLC (158.28K), Retirement Systems of Alabama (128.28K), PINNACLE ASSOCIATES LTD (82.51K), LORING WOLCOTT & COOLIDGE FIDUCIARY ADVISORS LLP/MA (72.43K), JIA INVESTMENT ALLIANCE PTE. LTD. (67.3K), ARS Investment Partners, LLC (45.27K), ATWOOD & PALMER INC (41.7K).

1,354 Institutional Holders

88,716,286 Total Shares Held

Rows:

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Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
VANGUARD GROUP INC	31 Dec, 2025	9,075,153	26,884	0.30%	$7,004,838,346.00
BlackRock, Inc.	31 Dec, 2025	8,741,270	-95,904	-1.09%	$6,747,123,706.00
State Street Corp	31 Dec, 2025	4,660,808	-30,415	-0.65%	$3,597,537,871.00
DODGE & COX	31 Dec, 2025	4,596,358	45,513	1.00%	$3,547,790,849.00
Jpmorgan Chase & Co	31 Dec, 2025	3,940,160	-4,204,492	-51.62%	$3,041,292,891.00
Franklin Resources Inc	31 Dec, 2025	2,560,004	106,861	4.36%	$1,975,990,279.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,519,540	-16,358	-0.65%	$1,936,711,198.00
FMR LLC	31 Dec, 2025	2,319,566	383,731	19.82%	$1,790,403,167.00
Goldman Sachs Group Inc	31 Dec, 2025	2,194,426	1,241,587	130.30%	$1,693,811,624.00
Nuveen, LLC	31 Dec, 2025	2,010,517	835,240	71.07%	$1,551,857,756.00
LOOMIS SAYLES & CO L P	31 Dec, 2025	1,934,326	-45,127	-2.28%	$1,493,048,247.00
Invesco Ltd.	31 Dec, 2025	1,591,105	106,632	7.18%	$1,228,126,594.00
Capital World Investors	31 Dec, 2025	1,398,003	-600,363	-30.04%	$1,079,077,052.00
Morgan Stanley	31 Dec, 2025	1,389,323	-61,649	-4.25%	$1,072,379,189.00
NORGES BANK	31 Dec, 2025	1,311,485	1,311,485	0.00%	$1,012,295,927.00
Bank Of America Corp /De/	31 Dec, 2025	1,157,426	-1,150,440	-49.85%	$893,382,732.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	995,710	274,356	38.03%	$768,518,494.00
Northern Trust Corp	31 Dec, 2025	944,933	-39,859	-4.05%	$729,365,434.00
Amundi	31 Dec, 2025	791,906	170,165	27.37%	$611,248,483.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	778,001	22,436	2.97%	$600,515,632.00

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