CITADEL ADVISORS LLC

Position in MMSI — Merit Medical Systems Inc

CIK 1423053 MIAMI, FL

Back to MMSI Full portfolio

Position in MMSI

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

Position Value

$66,364,700

-$30,025,820 QoQ

Shares Held

962,784

-12.0% QoQ

Ownership

1.61%

of shares outstanding

% of Portfolio

0.05%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

25 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in MMSI Over Time

Shares Held

Position Value (USD)

Derivatives in MMSI

reported options exposure · as of Dec 31, 2025

CallValue

$475,956

CallShares

5,400

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 Medical Instruments & Supplies

Healthcare · as of Mar 31, 2026

CITADEL ADVISORS LLC holds $1,983,694,213 across 42 Medical Instruments & Supplies names. MMSI ranks #12 (3.3% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ISRG	Intuitive Surgical Inc	1,356,011	$625,107,510
2	TFX	Teleflex Inc	1,171,096	$140,074,791
3	BDX	Becton Dickinson & Co	829,501	$130,422,441
4	RGEN	Repligen Corp	1,099,181	$129,505,505
5	ALGN	Align Technology Inc	730,025	$125,148,185
6	NVST	Envista Holdings Corp	4,584,572	$116,310,591
7	HOLX	HOLOGIC INC	1,090,660	$82,442,989
8	WST	West Pharmaceutical Services Inc	323,587	$81,103,845

All Filings in MMSI

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50 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$66,364,700	962,784	+17729.3%	Shares	Defined	2026-05-15
2025-12-31	$475,956	5,400	-99.5%	Call	Defined	2026-02-17
2025-12-31	$96,390,520	1,093,607	-7.1%	Shares	Defined	2026-02-17
2025-09-30	$97,945,147	1,176,801	+10501.8%	Shares	Defined	2025-11-14
2025-09-30	$923,853	11,100	+6.7%	Call	Defined	2025-11-14
2025-06-30	$972,192	10,400	-99.2%	Call	Defined	2025-08-14
2025-06-30	$126,109,099	1,349,049	+30560.2%	Shares	Defined	2025-08-14
2025-03-31	$465,124	4,400	+528.6%	Call	Defined	2025-05-15
2025-03-31	$73,997	700	-99.9%	Put	Defined	2025-05-15
2025-03-31	$100,535,178	951,047	+7632.1%	Shares	Defined	2025-05-15
2024-12-31	$1,189,656	12,300	-98.2%	Call	Defined	2025-02-14
2024-12-31	$67,567,236	698,586	+139617.2%	Shares	Defined	2025-02-14
2024-12-31	$48,360	500	-98.8%	Put	Defined	2025-02-14
2024-09-30	$4,191,577	42,412	+60.7%	Shares	Defined	2024-11-14
2024-09-30	$2,609,112	26,400	+576.9%	Call	Defined	2024-11-14
2024-09-30	$385,437	3,900	-73.8%	Put	Defined	2024-11-14
2024-06-30	$1,280,655	14,900	+152.5%	Call	Defined	2024-08-14
2024-06-30	$507,105	5,900	-99.1%	Put	Defined	2024-08-14
2024-06-30	$54,183,309	630,405	+118.8%	Shares	Defined	2024-08-14
2024-03-31	$21,829,862	288,183	+900.6%	Shares	Defined	2024-05-15
2024-03-31	$2,181,600	28,800	-2.7%	Put	Defined	2024-05-15
2024-03-31	$2,242,200	29,600	+3600.0%	Call	Defined	2024-05-15
2023-12-31	$60,768	800	-99.5%	Call	Defined	2024-02-14
2023-12-31	$13,044,534	171,729	+7705.9%	Shares	Defined	2024-02-14
2023-12-31	$167,112	2,200	-97.0%	Put	Defined	2024-02-14
2023-09-30	$5,066,344	73,404	+389.4%	Shares	Defined	2023-11-14
2023-09-30	$1,035,300	15,000	+525.0%	Call	Defined	2023-11-14
2023-09-30	$165,648	2,400	-81.9%	Put	Defined	2023-11-14
2023-06-30	$1,106,054	13,224	-5.1%	Shares	Defined	2023-08-14
2023-03-31	$1,030,492	13,935	+13835.0%	Shares	Defined	2023-05-15
2023-03-31	$7,395	100	-98.6%	Call	Defined	2023-05-15
2022-12-31	$520,610	7,372	-95.0%	Shares	Defined	2023-02-14
2022-09-30	$8,327,313	147,360	+52.3%	Shares	Defined	2022-11-14
2022-06-30	$5,251,816	96,772	-28.1%	Shares	Defined	2022-08-15
2022-03-31	$8,956,119	134,638	+985.8%	Shares	Defined	2022-05-16
2022-03-31	$824,848	12,400	-96.1%	Put	Defined	2022-05-16
2021-12-31	$19,973,940	320,609	+7719.7%	Shares	Defined	2022-02-14
2021-12-31	$255,430	4,100	-84.6%	Put	Defined	2022-02-14
2021-09-30	$1,909,735	26,598	+31.7%	Shares	Defined	2021-11-15
2021-09-30	$1,450,360	20,200	-9.9%	Call	Defined	2021-11-15
2021-06-30	$1,449,547	22,418	+250.3%	Shares	Defined	2021-08-16
2021-06-30	$413,824	6,400	-3.0%	Put	Defined	2021-08-16
2021-03-31	$395,208	6,600	-78.9%	Put	Defined	2021-05-21
2021-03-31	$1,875,681	31,324	+703.2%	Shares	Defined	2021-05-21
2021-03-31	$233,532	3,900	-30.8%	Call	Defined	2021-05-21
2020-12-31	$312,631	5,632	-15.9%	Shares	Defined	2021-02-16
2020-12-31	$371,917	6,700	-20.2%	Call	Defined	2021-02-16
2020-09-30	$365,400	8,400	-14.3%	Call	Defined	2020-11-16
2020-06-30	$447,370	9,800	-63.7%	Call	Defined	2020-08-14
2020-03-31	$843,187	26,982	—	Shares	Defined	2020-05-15
No filing history on record for this holder in this stock.