Magnetar Financial LLC Merck & Co., Inc. Transaction History

Magnetar Financial LLC

$2.85 Billion
Q3 2025

A detailed history of Magnetar Financial LLC transactions in Merck & Co., Inc. stock. As of the latest transaction made, Magnetar Financial LLC holds 7,366 shares of MRK stock, worth $684,006. This represents 0.02% of its overall portfolio holdings.

Number of Shares

7,366

Previous 8,424 12.56%

Holding current value

$684,006

Previous $756,000 18.25%

% of portfolio

0.02%

Previous 0.03%

30 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 13, 2025	SELL	$77.6 - $87.37 $82,100 - $92,437	-1,058 Reduced 12.56%	7,366 $618,000
Q1 2025 May 15, 2025	BUY	$83.01 - $101.02 $699,276 - $850,992	8,424 New	8,424 $756,000
Q3 2024 Nov 13, 2024	SELL	$111.15 - $128.97 $44.8 Million - $52 Million	-402,986 Reduced 93.05%	30,113 $3.42 Million
Q2 2024 Aug 14, 2024	BUY	$123.8 - $132.96 $28.5 Million - $30.6 Million	229,927 Added 113.17%	433,099 $53.6 Million
Q1 2024 May 15, 2024	SELL	$113.24 - $131.95 $135 Million - $157 Million	-1,193,315 Reduced 85.45%	203,172 $26.8 Million

Q4 2023 Feb 13, 2024	BUY	$100.18 - $109.02 $11 Million - $12 Million	109,719 Added 8.53%	1,396,487 $152 Million
Q3 2023 Nov 14, 2023	BUY	$102.95 - $114.33 $65.2 Million - $72.4 Million	632,837 Added 96.77%	1,286,768 $132 Million
Q2 2023 Aug 11, 2023	SELL	$108.61 - $118.38 $18.1 Million - $19.7 Million	-166,732 Reduced 20.32%	653,931 $75.5 Million
Q1 2023 May 15, 2023	BUY	$102.94 - $114.86 $33.2 Million - $37 Million	322,435 Added 64.72%	820,663 $87.3 Million
Q4 2022 Feb 14, 2023	SELL	$87.44 - $112.11 $23.9 Million - $30.6 Million	-273,261 Reduced 35.42%	498,228 $55.3 Million
Q3 2022 Nov 14, 2022	BUY	$84.53 - $94.96 $22 Million - $24.7 Million	260,205 Added 50.89%	771,489 $66.4 Million
Q2 2022 Aug 15, 2022	SELL	$83.49 - $94.64 $5.3 Million - $6.01 Million	-63,464 Reduced 11.04%	511,284 $46.6 Million
Q1 2022 May 16, 2022	BUY	$73.51 - $82.4 $37.5 Million - $42.1 Million	510,484 Added 794.35%	574,748 $47.2 Million
Q4 2021 Feb 14, 2022	BUY	$72.28 - $90.54 $4.65 Million - $5.82 Million	64,264 New	64,264 $4.93 Million
Q3 2021 Nov 12, 2021	SELL	$71.68 - $78.83 $11.5 Million - $12.6 Million	-160,381 Closed	0 $0
Q2 2021 Aug 06, 2021	SELL	$70.31 - $77.77 $28.4 Million - $31.4 Million	-404,340 Reduced 71.6%	160,381 $12.5 Million
Q1 2021 May 14, 2021	BUY	$68.86 - $81.11 $11.4 Million - $13.4 Million	165,518 Added 41.46%	564,721 $43.5 Million
Q4 2020 Feb 12, 2021	BUY	$71.77 - $79.65 $16.4 Million - $18.2 Million	228,305 Added 133.59%	399,203 $32.7 Million
Q3 2020 Nov 16, 2020	BUY	$73.18 - $82.95 $9.58 Million - $10.9 Million	130,898 Added 327.25%	170,898 $14.2 Million
Q2 2020 Aug 14, 2020	SELL	$70.42 - $80.13 $3.27 Million - $3.73 Million	-46,494 Reduced 53.75%	40,000 $3.09 Million
Q1 2020 May 15, 2020	SELL	$63.36 - $87.82 $14.1 Million - $19.6 Million	-222,633 Reduced 72.02%	86,494 $6.66 Million
Q4 2019 Feb 13, 2020	BUY	$77.58 - $87.54 $7.03 Million - $7.93 Million	90,627 Added 41.48%	309,127 $28.1 Million
Q3 2019 Nov 14, 2019	BUY	$76.08 - $82.93 $16.6 Million - $18.1 Million	218,500 New	218,500 $18.4 Million
Q2 2019 Aug 14, 2019	SELL	$69.84 - $81.59 $1.82 Million - $2.12 Million	-26,000 Closed	0 $0
Q1 2019 May 15, 2019	SELL	$69.58 - $79.36 $8.98 Million - $10.2 Million	-129,000 Reduced 83.23%	26,000 $2.16 Million
Q4 2018 Feb 14, 2019	BUY	$65.24 - $75.71 $1.42 Million - $1.65 Million	21,742 Added 16.32%	155,000 $11.8 Million
Q3 2018 Nov 14, 2018	BUY	$57.69 - $67.84 $6.82 Million - $8.02 Million	118,258 Added 788.39%	133,258 $9.45 Million
Q2 2018 Aug 14, 2018	BUY	$50.83 - $59.72 $552,827 - $649,514	10,876 Added 263.72%	15,000 $911,000
Q4 2017 Feb 14, 2018	SELL	$51.62 - $61.64 $891,941 - $1.07 Million	-17,279 Reduced 80.73%	4,124 $232,000
Q3 2017 Nov 14, 2017	BUY	$58.67 - $63.13 $1.26 Million - $1.35 Million	21,403	21,403 $1.37 Million

Others Institutions Holding MRK

# of Institutions

3,875

Shares Held

1.9B

Call Options Held

30.1M

Put Options Held

27.7M

View Full List

About Merck & Co., Inc.

Ticker MRK
Exchange NYSE
Sector Healthcare
Industry Drug Manufacturers—General
Shares Outstandng 2,533,280,000
Market Cap $235B
Description
Merck & Co., Inc. operates as a healthcare company worldwide. It operates through two segments, Pharmaceutical and Animal Health. The Pharmaceutical segment offers human health pharmaceutical products in the areas of oncology, hospital acute care, immunology, neuroscience, virology, cardiovascular, and diabetes, as well as vaccine products, ...

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Magnetar Financial LLC Merck & Co., Inc. Transaction History