Hudson Bay Capital Management’s Merck MRK Stock Holding History

Hudson Bay Capital Management’s Portfolio MRK Stock Details MRK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$96.2M	Buy	800,000 +450,000	+129%	+$52M	0.33%	62
2025 Q4	$36.8M	Sell	350,000 -250,000	-42%	-$23.5M	0.12%	154
2025 Q3	$50.4M	Sell	600,000 -120,000	-17%	-$9.88M	0.17%	98
2025 Q2	$57M	Sell	720,000 -389,500	-35%	-$31M	0.19%	92
2025 Q1	$99.6M	Buy	1,109,500 +569,500	+105%	+$53.2M	0.31%	77
2024 Q4	$53.7M	Buy	540,000 +40,000	+8%	+$4.12M	0.19%	114
2024 Q3	$56.8M	Buy	+500,000	New	+$59.4M	0.23%	75
2023 Q3	–	Sell	-1,000,000	Closed	-$115M	–	898
2023 Q2	$115M	Buy	+1,000,000	New	+$114M	0.84%	35
2019 Q2	–	Sell	-524,000	Closed	-$41.6M	–	620
2019 Q1	$41.6M	Sell	524,000 -524,000	-50%	-$39.2M	0.54%	32
2018 Q4	$76.4M	Buy	+1,048,000	New	+$74M	1.02%	15

Other funds holding MRK

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Hudson Bay Capital Management's MRK Position: Q1 2026 in Review

Hudson Bay Capital Management increased its Merck (MRK) stake by 5,539% in Q1 2026, buying an estimated $11.5M and bringing the position to 101,505 shares worth $12.2M. The position accounts for 0.04% of the portfolio, ranked #276.

Hudson Bay Capital Management first reported a position in MRK in Q4 2017 and has held it in 18 quarters since. The position peaked at $115M in Q2 2023. 3,780 funds tracked by Wall St. Rank hold MRK as of Q1 2026.

Hudson Bay Capital Management held 101,505 shares of Merck worth $12.2M as of Q1 2026.
Hudson Bay Capital Management bought 99,705 Merck shares in Q1 2026, an estimated $11.5M.
Merck made up 0.04% of Hudson Bay Capital Management's portfolio in Q1 2026, its #276 holding.
Hudson Bay Capital Management first reported a position in Merck in Q4 2017 and has held it in 18 quarters since.
Hudson Bay Capital Management's Merck position peaked at $115M in Q2 2023.
3,780 funds tracked by Wall St. Rank held Merck as of Q1 2026.

Based on Hudson Bay Capital Management's 13F filing for Q1 2026, filed 13 May 2026.