MRK

Merck & Co. Inc.

Latest period2026 - Q2Total superinvestors294

The latest quarter's data is still being updated as more institutional investors submit their 13F reports, so the current information might be incomplete.

Top 10 Superinvestors by Shares Owned

This chart shows the top 10 superinvestors based on the number of shares they owned in 2026-Q1 and 2026-Q2. According to the most recent SEC 13F filing, 294 superinvestors own shares of Merck & Co. Inc. (MRK), although recent data may remain incomplete due to pending filings.

Quarter-over-Quarter Change (%)

The most recent quarter may show incomplete data because not all institutional investors have filed their 13F reports yet.

This chart highlights the quarter-over-quarter change (%) in the number of superinvestors holding Merck & Co. Inc. (MRK), the total shares they held, and the total reported dollar value. It gives a clear view of whether there is ongoing momentum. The dotted lines at the top and bottom adjust longer bars to keep smaller data points visible for better comparison.

Superinvestors' Activity (%) Over the Last 4 Quarters

This chart shows superinvestors' activity with Merck & Co. Inc. (MRK) over the last four quarters, highlighting the percentage of investors who added, increased, decreased, held, or exited their positions, revealing shifts in sentiment over time.

Superinvestors' Past Actions

This chart displays superinvestors' past actions with Merck & Co. Inc. (MRK) over the last 10 years (40 quarters), helping to visualize the collective momentum and investment trends over time.

Superinvestors ownership

Superinvestor	Portfolio %	Reported Value	Recent Activity
Dr. Dr. Heimo Ploessnig@Assenagon Asset Management S.a. Recent Activity Increased 263.69%	0.44%	$347.334M 2.703M shares@ 128.5 avg price	Increased 263.69%
Mikael Aho@Handelsbanken Fonder Ab Recent Activity Increased 5.13%	0.72%	$251.834M 1.96M shares@ 128.51 avg price	Increased 5.13%
Marc Strijbos@Cardano Risk Management B.v. Recent Activity Decreased -0.95%	0.97%	$124.686M 970,317 shares@ 128.51 avg price	Decreased -0.95%
Richard Jocelyn@Sarasin & Partners Llp Recent Activity Decreased -6.24%	1.11%	$94.661M 736,662 shares@ 128.51 avg price	Decreased -6.24%
Phillip Schutt@Old Republic International Corp Recent Activity	3.4%	$90.678M 705,600 shares@ 128.52 avg price
MAREK SESTAK@Czech National Bank Recent Activity Increased 4.01%	0.5%	$90.336M 703,007 shares@ 128.51 avg price	Increased 4.01%
Joshua S. Pechter@Cacti Asset Management Llc Recent Activity	4.16%	$82.921M 645,299 shares@ 128.51 avg price
Shauna Haglof@Rockland Trust Co Recent Activity Decreased -8.39%	2.47%	$62.971M 490,049 shares@ 128.51 avg price	Decreased -8.39%
Soren Pihl@Pensiondanmark Pensionsforsikringsaktieselskab Recent Activity New Position	0.5%	$59.486M 462,927 shares@ 128.51 avg price	New Position
DeWayne Osborn@Cardinal Capital Management, Inc. Recent Activity Decreased -0.49%	0.65%	$26.529M 206,451 shares@ 128.51 avg price	Decreased -0.49%

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