HORIZON KINETICS ASSET MANAGEMENT LLC

Position in REGN — Regeneron Pharmaceuticals, Inc.

CIK 1056823 NEW YORK, NY

Position in REGN

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$521,532

-$22,636 QoQ

Shares Held

675

-4.3% QoQ

Ownership

0.001%

of shares outstanding

% of Portfolio

0.01%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2023

13 quarters on record

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

Healthcare · as of Mar 31, 2026

HORIZON KINETICS ASSET MANAGEMENT LLC holds $19,937,430 across 14 Biotechnology names. REGN ranks #4 (2.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	RPRX	Royalty Pharma plc	340,783	$16,347,360
2	IONS	Ionis Pharmaceuticals Inc	11,428	$858,128
3	ALNY	Alnylam Pharmaceuticals, Inc.	2,272	$751,736
4	REGN	Regeneron Pharmaceuticals, Inc. This page	675	$521,532
5	CRSP	CRISPR Therapeutics AG	9,796	$465,995
6	BEAM	Beam Therapeutics Inc.	8,791	$209,489
7	NTLA	Intellia Therapeutics, Inc.	13,188	$169,070
8	VNDA	Vanda Pharmaceuticals Inc.	23,736	$164,015

13 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$521,532	675	-4.3%	Shares	Defined	2026-05-15
2025-12-31	$544,168	705	-4.1%	Shares	Defined	2026-02-11
2025-09-30	$413,268	735	+4.3%	Shares	Defined	2025-11-14
2025-06-30	$370,125	705	-4.1%	Shares	Defined	2025-08-12
2025-03-31	$466,159	735	0.0%	Shares	Defined	2025-05-15
2024-12-31	$523,562	735	+4.1%	Shares	Defined	2025-02-10
2024-09-30	$742,175	706	-4.1%	Shares	Defined	2024-11-13
2024-06-30	$773,558	736	0.0%	Shares	Defined	2024-08-14
2024-03-31	$708,392	736	+0.1%	Shares	Defined	2024-05-14
2023-12-31	$645,543	735	-3.9%	Shares	Defined	2024-02-15
2023-09-30	$629,564	765	0.0%	Shares	Defined	2023-11-14
2023-06-30	$549,683	765	0.0%	Shares	Defined	2023-08-14
2023-03-31	$628,577	765	—	Shares	Defined	2023-05-12
No filing history on record for this holder in this stock.