ACADIAN ASSET MANAGEMENT LLC

Position in REGN — Regeneron Pharmaceuticals, Inc.

CIK 916542 Boston, MA

Back to REGN Full portfolio

Position in REGN

as of Mar 31, 2026 · filed May 13, 2026 Compact

Position Value

$116,816,214

-$227,279,572 QoQ

Shares Held

151,191

-66.1% QoQ

Ownership

0.144%

of shares outstanding

% of Portfolio

0.17%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in REGN Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Mar 31, 2026

ACADIAN ASSET MANAGEMENT LLC holds $702,641,602 across 178 Biotechnology names. REGN ranks #2 (16.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	INCY	Incyte Corp	1,900,824	$178,905,554
2	REGN	Regeneron Pharmaceuticals, Inc. This page	151,191	$116,816,214
3	QNCX	Quince Therapeutics, Inc.	1,750,862	$35,367,412
4	LEGN	Legend Biotech Corp	1,527,336	$27,629,508
5	TBPH	Theravance Biopharma, Inc.	1,276,576	$20,718,828
6	RIGL	Rigel Pharmaceuticals Inc	666,426	$18,020,159
7	IMCR	Immunocore Holdings plc	501,091	$15,107,893
8	PRTA	Prothena Corp Public Ltd Co	1,547,593	$15,042,603

All Filings in REGN

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25 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$116,816,214	151,191	-66.1%	Shares	Defined	2026-05-13
2025-12-31	$344,095,786	445,795	-23.7%	Shares	Defined	2026-02-10
2025-09-30	$328,649,626	584,505	+25.5%	Shares	Defined	2025-11-13
2025-06-30	$244,513,500	465,740	+234.7%	Shares	Defined	2025-08-07
2025-03-31	$88,257,544	139,157	+69.0%	Shares	Defined	2025-05-21
2024-12-31	$58,653,964	82,341	+22.4%	Shares	Defined	2025-02-11
2024-09-30	$70,736,888	67,289	-7.6%	Shares	Defined	2024-11-12
2024-06-30	$76,546,514	72,830	+17.2%	Shares	Defined	2024-08-06
2024-03-31	$59,810,091	62,141	+37.2%	Shares	Defined	2024-05-10
2023-12-31	$39,773,362	45,285	-36.5%	Shares	Defined	2024-02-13
2023-09-30	$58,670,464	71,292	-13.1%	Shares	Defined	2023-11-13
2023-06-30	$58,974,889	82,076	-20.3%	Shares	Defined	2023-08-07
2023-03-31	$84,655,838	103,029	-48.6%	Shares	Defined	2023-05-11
2022-12-31	$144,574,330	200,383	-23.2%	Shares	Defined	2023-02-14
2022-09-30	$179,791,625	260,995	-27.4%	Shares	Defined	2022-11-14
2022-06-30	$212,460,988	359,415	-16.3%	Shares	Defined	2022-08-09
2022-03-31	$299,760,467	429,198	-5.1%	Shares	Defined	2022-05-12
2021-12-31	$285,568,923	452,193	-14.6%	Shares	Defined	2022-02-10
2021-09-30	$320,421,628	529,465	+19.9%	Shares	Defined	2021-11-12
2021-06-30	$246,679,191	441,650	+3.8%	Shares	Defined	2021-08-11
2021-03-31	$201,261,454	425,374	+351.5%	Shares	Defined	2021-05-11
2020-12-31	$45,518,624	94,220	-1.3%	Shares	Defined	2021-02-11
2020-09-30	$53,458,430	95,499	+19.0%	Shares	Defined	2020-11-09
2020-06-30	$50,028,579	80,219	+2150.2%	Shares	Defined	2020-08-12
2020-03-31	$1,740,753	3,565	—	Shares	Defined	2020-05-11
No filing history on record for this holder in this stock.