Tamar Securities, LLC

Broker-Dealer

Position in REGN — Regeneron Pharmaceuticals, Inc.

CIK 1703081 Woodland Hills, CA

Back to REGN Full portfolio

Position in REGN

as of Mar 31, 2026 · filed May 14, 2026 Compact

Position Value

$27,196,155

-$4,030,617 QoQ

Shares Held

35,199

-13.0% QoQ

Ownership

0.034%

of shares outstanding

% of Portfolio

3.76%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Jun 2020

24 quarters on record

Voting authority Sole 0% Shared 0% None 100%

Common Shares in REGN Over Time

Shares Held

Position Value (USD)

Derivatives in REGN

reported options exposure · as of Mar 31, 2026

CallValue

$77,264

CallShares

100

PutValue

PutShares

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Biotechnology

Healthcare · as of Mar 31, 2026

Tamar Securities, LLC holds $27,323,485 across 3 Biotechnology names. REGN ranks #1 (99.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	REGN	Regeneron Pharmaceuticals, Inc. This page	35,199	$27,196,155
2	TTRX	Turn Therapeutics Inc.	30,000	$96,000
3	CRDF	Cardiff Oncology, Inc.	19,340	$31,330

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	$77,264	100	-99.7%	Call	Sole	2026-05-14
2026-03-31	$27,196,155	35,199	-13.0%	Shares	Sole	2026-05-14
2025-12-31	$31,226,772	40,456	+25.4%	Shares	Sole	2026-02-13
2025-09-30	$18,142,203	32,266	+6.2%	Shares	Sole	2025-11-14
2025-06-30	$15,950,025	30,381	+8.0%	Shares	Sole	2025-08-11
2025-03-31	$17,843,426	28,134	+37.9%	Shares	Sole	2025-05-15
2024-12-31	$14,532,244	20,401	+31.7%	Shares	Sole	2025-01-22
2024-09-30	$16,285,810	15,492	+16.6%	Shares	Sole	2024-10-16
2024-06-30	$13,958,729	13,281	-5.2%	Shares	Sole	2024-10-10
2024-03-31	$13,486,409	14,012	-1.5%	Shares	Sole	2024-05-13
2023-12-31	$12,496,310	14,228	+10.5%	Shares	Sole	2024-01-25
2023-09-30	$10,594,787	12,874	-1.3%	Shares	Sole	2023-11-14
2023-06-30	$9,369,761	13,040	+13.7%	Shares	Sole	2024-10-10
2023-03-31	$9,424,554	11,470	-9.3%	Shares	Sole	2024-10-10
2022-12-31	$9,126,848	12,650	-0.9%	Shares	Other	2023-02-10
2022-09-30	$8,794,114	12,766	+4.0%	Shares	Other	2022-11-07
2022-06-30	$7,259,076	12,280	+2.7%	Shares	Other	2022-08-05
2022-03-31	$8,353,801	11,961	+12.8%	Shares	Other	2022-04-27
2021-12-31	$6,696,006	10,603	-1.4%	Shares	Other	2022-02-14
2021-09-30	$6,508,710	10,755	-0.7%	Shares	Other	2021-10-19
2021-06-30	$6,049,546	10,831	+6.8%	Shares	Other	2021-08-06
2021-03-31	$4,798,585	10,142	+23.1%	Shares	Other	2021-05-11
2020-12-31	$3,979,860	8,238	+8.8%	Shares	Other	2021-01-27
2020-09-30	$4,238,094	7,571	+6.6%	Shares	Other	2020-11-05
2020-06-30	$4,427,291	7,099	—	Shares	Sole	2020-09-10
No filing history on record for this holder in this stock.