Company · Ownership research

REGENERON PHARMACEUTICALS, INC. REGN

CIK 0000872589 · CUSIP 75886F107

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 75886F107 (REGN), not CUSIP 75886F907 (REGN), CUSIP 75886F957 (REGN), and does not merge CUSIPs.

This page lists the top 20 of 756 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$1.99B 2,632,826 shares	0.10%	+7.02K(+0.30%)Added	SEC filing ↗ Nov 6, 2026	▾
02	Amundi CIK 1330387 · View history	$872.79M 1,151,032 shares	0.18%	+137.49K(+13.60%)Added	SEC filing ↗ Nov 6, 2026	▾
03	Bank of New York Mellon Corp CIK 1390777 · View history	$557.08M 734,673 shares	0.09%	-23.82K(-3.10%)Reduced	SEC filing ↗ Nov 5, 2026	▾
04	DEUTSCHE BANK AG\ CIK 948046 · View history	$521.19M 687,345 shares	0.14%	+168.94K(+32.60%)Added	SEC filing ↗ Nov 6, 2026	▾
05	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$462.22M 609,644 shares	0.08%	+49.96K(+8.90%)Added	SEC filing ↗ Nov 4, 2026	▾
06	Robeco Institutional Asset Management B.V. CIK 1418773 · View history	$305.55M 402,958 shares	0.37%	-57.64K(-12.50%)Reduced	SEC filing ↗ Oct 20, 2026	▾
07	BARCLAYS PLC CIK 312069 · View history	$264.21M 348,437 shares	0.09%	+92.25K(+36.00%)Added	SEC filing ↗ Nov 6, 2026	▾
08	Sumitomo Mitsui Trust Group, Inc. CIK 1475365 · View history	$210.89M 278,120 shares	0.12%	-4.08K(-1.40%)Reduced	SEC filing ↗ Oct 29, 2026	▾
09	Mitsubishi UFJ Asset Management Co., Ltd. CIK 1466546 · View history	$204.78M 270,056 shares	0.11%	+12.61K(+4.90%)Added	SEC filing ↗ Nov 5, 2026	▾
10	LSV ASSET MANAGEMENT CIK 1050470 · View history	$186.63M 246,126 shares	0.34%	-7.07K(-2.80%)Reduced	SEC filing ↗ Nov 6, 2026	▾
11	Russell Investments Group, Ltd. CIK 1692234 · View history	$154.41M 203,767 shares	0.12%	-26.38K(-11.50%)Reduced	SEC filing ↗ Nov 6, 2026	▾
12	Swedbank AB CIK 946431 · View history	$142.99M 188,572 shares	0.12%	-1.28K(-0.70%)Reduced	SEC filing ↗ Oct 27, 2026	▾
13	KBC Group NV CIK 1411133 · View history	$142.93M 188,496 shares	0.30%	+8.99K(+5.00%)Added	SEC filing ↗ Oct 22, 2026	▾
14	CITIGROUP INC CIK 831001 · View history	$138.42M 182,543 shares	0.07%	-164.09K(-47.30%)Reduced	SEC filing ↗ Nov 4, 2026	▾
15	Candriam S.C.A. CIK 1537014 · View history	$131.77M 173,146 shares	0.59%	-22.53K(-11.50%)Reduced	SEC filing ↗ Nov 3, 2026	▾
16	MCDONALD CAPITAL INVESTORS INC/CA CIK 1033225 · View history	$130.91M 172,649 shares	10.75%	-20.39K(-10.60%)Reduced	SEC filing ↗ Oct 27, 2026	▾
17	Thrivent Financial for Lutherans CIK 314984 · View history	$120.21M 158,564 shares	0.20%	+27.11K(+20.60%)Added	SEC filing ↗ Nov 5, 2026	▾
18	Pictet Asset Management Holding SA CIK 1993888 · View history	$97.24M 129,108 shares	0.09%	-24.39K(-15.90%)Reduced	SEC filing ↗ Nov 3, 2026	▾
19	MACKENZIE FINANCIAL CORP CIK 919859 · View history	$96.90M 127,797 shares	0.11%	-7.99K(-5.90%)Reduced	SEC filing ↗ Nov 2, 2026	▾
20	Retirement Systems of Alabama CIK 1593051 · View history	$96.63M 127,437 shares	0.29%	-432(-0.30%)Reduced	SEC filing ↗ Nov 4, 2026	▾

Showing 20 / 756 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

756

Cancelled or null records excluded

Disclosed shares

14,261,953

Not deduplicated across managers

Disclosed value

$10.30B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

REGENERON PHARMACEUTICALS, INC. · Q3 2026

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This page includes 20 of 756 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.