Ken Griffin Merit Medical Systems Inc Transaction History

Citadel Advisors LLC

$618 Billion
Q3 2025

A detailed history of Ken Griffin (Citadel Advisors LLC) transactions in Merit Medical Systems Inc stock. As of the latest transaction made, Citadel Advisors LLC holds 1,176,801 shares of MMSI stock, worth $100 Million. This represents 0.02% of its overall portfolio holdings.

Number of Shares

1,176,801

Previous 1,349,049 12.77%

Holding current value

$100 Million

Previous $126 Million 22.33%

% of portfolio

0.02%

Previous 0.02%

31 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	SELL	$80.06 - $96.01 $13.8 Million - $16.5 Million	-172,248 Reduced 12.77%	1,176,801 $97.9 Million
Q2 2025 Aug 14, 2025	BUY	$88.48 - $107.04 $35.2 Million - $42.6 Million	398,002 Added 41.85%	1,349,049 $126 Million
Q1 2025 May 15, 2025	BUY	$95.64 - $110.29 $24.1 Million - $27.8 Million	252,461 Added 36.14%	951,047 $101 Million
Q4 2024 Feb 14, 2025	BUY	$93.76 - $105.52 $61.5 Million - $69.2 Million	656,174 Added 1547.14%	698,586 $67.6 Million
Q3 2024 Nov 14, 2024	SELL	$84.12 - $100.23 $49.5 Million - $58.9 Million	-587,993 Reduced 93.27%	42,412 $4.19 Million

Q2 2024 Aug 14, 2024	BUY	$70.99 - $85.95 $24.3 Million - $29.4 Million	342,222 Added 118.75%	630,405 $54.2 Million
Q1 2024 May 15, 2024	BUY	$71.86 - $81.25 $8.37 Million - $9.46 Million	116,454 Added 67.81%	288,183 $21.8 Million
Q4 2023 Feb 14, 2024	BUY	$62.92 - $76.7 $6.19 Million - $7.54 Million	98,325 Added 133.95%	171,729 $13 Million
Q3 2023 Nov 14, 2023	BUY	$63.36 - $84.73 $3.81 Million - $5.1 Million	60,180 Added 455.08%	73,404 $5.07 Million
Q2 2023 Aug 14, 2023	SELL	$74.03 - $85.24 $52,635 - $60,605	-711 Reduced 5.1%	13,224 $1.11 Million
Q1 2023 May 15, 2023	BUY	$66.13 - $73.95 $434,011 - $485,333	6,563 Added 89.03%	13,935 $1.03 Million
Q4 2022 Feb 14, 2023	SELL	$54.72 - $74.43 $7.66 Million - $10.4 Million	-139,988 Reduced 95.0%	7,372 $520,000
Q3 2022 Nov 14, 2022	BUY	$51.68 - $63.58 $2.61 Million - $3.22 Million	50,588 Added 52.28%	147,360 $8.33 Million
Q2 2022 Aug 15, 2022	SELL	$51.75 - $70.49 $1.96 Million - $2.67 Million	-37,866 Reduced 28.12%	96,772 $5.25 Million
Q1 2022 May 16, 2022	SELL	$52.65 - $66.52 $9.79 Million - $12.4 Million	-185,971 Reduced 58.01%	134,638 $8.96 Million
Q4 2021 Feb 14, 2022	BUY	$59.58 - $72.61 $17.5 Million - $21.3 Million	294,011 Added 1105.39%	320,609 $20 Million
Q3 2021 Nov 15, 2021	BUY	$59.6 - $73.23 $249,128 - $306,101	4,180 Added 18.65%	26,598 $1.91 Million
Q2 2021 Aug 16, 2021	SELL	$59.1 - $64.86 $526,344 - $577,643	-8,906 Reduced 28.43%	22,418 $1.45 Million
Q1 2021 May 17, 2021	BUY	$52.56 - $60.99 $1.35 Million - $1.57 Million	25,692 Added 456.18%	31,324 $1.88 Million
Q4 2020 Feb 16, 2021	SELL	$42.16 - $58.11 $900,115 - $1.24 Million	-21,350 Reduced 79.13%	5,632 $313,000
Q1 2020 May 15, 2020	BUY	$25.94 - $41.02 $206,793 - $327,011	7,972 Added 41.94%	26,982 $843,000
Q4 2019 Feb 14, 2020	SELL	$20.66 - $32.08 $3.75 Million - $5.82 Million	-181,527 Reduced 90.52%	19,010 $593,000
Q3 2019 Nov 14, 2019	SELL	$27.08 - $58.7 $13.8 Million - $30 Million	-510,627 Reduced 71.8%	200,537 $6.11 Million
Q2 2019 Aug 14, 2019	BUY	$51.63 - $62.6 $26.9 Million - $32.6 Million	520,436 Added 272.87%	711,164 $42.4 Million
Q1 2019 May 15, 2019	BUY	$50.86 - $61.83 $5.64 Million - $6.85 Million	110,840 Added 138.74%	190,728 $0
Q4 2018 Feb 14, 2019	BUY	$50.15 - $65.94 $3.07 Million - $4.04 Million	61,288 Added 329.51%	79,888 $4.46 Million
Q3 2018 Nov 13, 2018	SELL	$53.0 - $62.85 $1.48 Million - $1.76 Million	-28,018 Reduced 60.1%	18,600 $0
Q2 2018 Aug 10, 2018	SELL	$44.75 - $55.15 $12.5 Million - $15.4 Million	-279,528 Reduced 85.71%	46,618 $0
Q1 2018 May 11, 2018	BUY	$42.1 - $48.0 $6.75 Million - $7.69 Million	160,257 Added 96.6%	326,146 $14.8 Million
Q4 2017 Feb 09, 2018	BUY	$36.8 - $45.4 $654,488 - $807,439	17,785 Added 12.01%	165,889 $7.17 Million
Q3 2017 Nov 09, 2017	BUY	$39.75 - $42.4 $5.89 Million - $6.28 Million	148,104	148,104 $6.27 Million

Others Institutions Holding MMSI

# of Institutions

420

Shares Held

61.2M

Call Options Held

911K

Put Options Held

25.3K

View Full List

About MERIT MEDICAL SYSTEMS INC

Ticker MMSI
Exchange NASDAQ
Sector Healthcare
Industry Medical Instruments & Supplies
Shares Outstandng 56,919,400
Market Cap $4.84B
Description
Merit Medical Systems, Inc. designs, develops, manufactures, and markets single-use medical products for interventional, diagnostic, and therapeutic procedures, primarily in cardiology, radiology, oncology, critical care, and endoscopy. The company operates in two segments, Cardiovascular and Endoscopy. It provides peripheral intervention produc...

More about MMSI

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