Updated
Merck & CompanyMRK · Healthcare
$148.73+1.37%
Market cap$366.7B
IndustryDrug Manufacturers - General
Merck & Company (MRK) Superinvestor holders
46 of the superinvestors we track hold Merck & Company (MRK) in their latest 13F filings, $15.3B in total.
Summary
The largest holder is Ken Fisher (Fisher Investments), with $6.1B, 1.7% of the portfolio.
In their latest quarter: 1 opened a new position, 11 added, 31 trimmed.
Who holds it
Each investor's latest 13F filing, largest stake first. What a 13F shows.
| Investor | Last change | Shares | Value | % of portfolio | Filed for |
|---|---|---|---|---|---|
| Ken Fisher Fisher Investments |
Added | 41,699,432 | $6.1B | 1.7% | Q3 2026 |
| Bill Nygren Harris Associates LP |
Trimmed | 12,073,109 | $1.6B | 2.1% | Q2 2026 |
| Cliff Asness AQR Capital Management |
Trimmed | 8,134,262 | $1.0B | 0.4% | Q2 2026 |
| Jeremy Grantham GMO |
Trimmed | 6,785,008 | $872M | 2.0% | Q2 2026 |
| Howard Gleicher Aristotle Capital Management |
Trimmed | 6,578,570 | $845M | 1.8% | Q2 2026 |
| Josef Lakonishok LSV Asset Management |
Trimmed | 5,077,473 | $738M | 1.4% | Q3 2026 |
| Arrowstreet Capital | Added | 3,966,523 | $510M | 0.2% | Q2 2026 |
| Thornburg Thornburg Investment Management |
Added | 3,787,976 | $487M | 4.7% | Q2 2026 |
| Acadian Acadian Asset Management |
Trimmed | 3,062,568 | $445M | 0.5% | Q3 2026 |
| Ensign Peak Ensign Peak Advisors |
Added | 3,364,831 | $432M | 0.7% | Q2 2026 |
| David Shaw D. E. Shaw & Co. |
Trimmed | 2,738,023 | $352M | 0.2% | Q2 2026 |
| Jennison Associates | Trimmed | 2,728,958 | $351M | 0.2% | Q2 2026 |
| Bill Smead Smead Capital Management |
Trimmed | 2,305,916 | $335M | 7.1% | Q3 2026 |
| Charles Brandes Brandes Investment Partners, LP |
Trimmed | 1,910,947 | $246M | 1.7% | Q2 2026 |
| Fayez Sarofim Fayez Sarofim & Co |
Trimmed | 1,664,909 | $214M | 0.5% | Q2 2026 |
| Man Group Man Group plc |
Added | 990,469 | $127M | 0.2% | Q2 2026 |
| Sarah Ketterer Causeway Capital Management |
Added | 954,932 | $123M | 1.3% | Q2 2026 |
| Mark Donovan Boston Partners |
Trimmed | 629,240 | $81M | 0.1% | Q2 2026 |
| Brandon Haley Holocene Advisors |
Added | 628,000 | $81M | 0.2% | Q2 2026 |
| Hersh Cohen ClearBridge Investments |
Trimmed | 565,690 | $73M | 0.1% | Q2 2026 |
| Joel Greenblatt Gotham Asset Management |
Added | 528,937 | $68M | 0.2% | Q2 2026 |
| Alger Fred Alger Management |
Added | 487,735 | $63M | 0.2% | Q2 2026 |
| Steve Cohen Point72 Asset Management |
Trimmed | 380,081 | $49M | 0.1% | Q2 2026 |
| Thomas Kahn Kahn Brothers Group |
Trimmed | 218,182 | $28M | 4.4% | Q2 2026 |
| Tom Steyer Farallon Capital Management LLC |
Trimmed | 199,000 | $26M | 0.2% | Q2 2026 |
| Prem Watsa Fairfax Financial Holdings |
Held | 172,900 | $22M | 0.8% | Q2 2026 |
| First Manhattan First Manhattan Co |
Added | 158,760 | $21M | 0.1% | Q2 2026 |
| Dodge & Cox | Trimmed | 135,750 | $17M | 0.0% | Q2 2026 |
| Neil Hennessy Hennessy Advisors |
Trimmed | 112,100 | $16M | 0.6% | Q3 2026 |
| Artisan Partners | Trimmed | 87,246 | $11M | 0.0% | Q2 2026 |
| Mario Gabelli GAMCO Investors |
Trimmed | 62,672 | $8M | 0.1% | Q2 2026 |
| Aziz Hamzaogullari Loomis Sayles & Co |
Trimmed | 58,514 | $8M | 0.0% | Q2 2026 |
| Mairs & Power Mairs & Power Inc |
Added | 51,519 | $7M | 0.1% | Q2 2026 |
| Alan Howard Brevan Howard |
Trimmed | 50,031 | $6M | 0.1% | Q2 2026 |
| Two Sigma Two Sigma Investments |
Trimmed | 48,625 | $6M | 0.0% | Q2 2026 |
| Chris Bloomstran Semper Augustus Investments Group |
Held | 44,633 | $6M | 0.6% | Q2 2026 |
| PRIMECAP Management PRIMECAP Management Co |
Trimmed | 35,700 | $5M | 0.0% | Q2 2026 |
| Ray Dalio Bridgewater Associates |
New position | 30,254 | $4M | 0.0% | Q2 2026 |
| Murray Stahl Horizon Kinetics LLC |
Trimmed | 28,151 | $4M | 0.0% | Q2 2026 |
| Ron Baron Baron Capital (BAMCO) |
Trimmed | 22,000 | $3M | 0.0% | Q2 2026 |
| Fred DiSanto Ancora Holdings |
Trimmed | 20,902 | $3M | 0.1% | Q2 2026 |
| Alan Breed Edgewood Management |
Held | 7,718 | $991,763 | 0.0% | Q2 2026 |
| Mark Boyar Boyar Asset Management |
Trimmed | 5,597 | $813,337 | 0.5% | Q3 2026 |
| Eric Marshall Hodges Capital Management |
Trimmed | 5,714 | $734,302 | 0.0% | Q2 2026 |
| David Katz Matrix Asset Advisors |
Trimmed | 1,621 | $235,548 | 0.0% | Q3 2026 |
| Tom Russo Gardner Russo & Quinn |
Trimmed | 1,642 | $211,006 | 0.0% | Q2 2026 |
Holders by quarter
| Quarter | Superinvestors holding it |
|---|---|
| Q2 2026 | 47 |
| Q1 2026 | 48 |
| Q4 2025 | 48 |
| Q3 2025 | 48 |
| Q2 2025 | 47 |
| Q1 2025 | 50 |
| Q4 2024 | 48 |
| Q3 2024 | 52 |
Questions about Merck & Company
Which superinvestors own Merck & Company?
46 of the superinvestors we track hold Merck & Company (MRK) in their latest 13F filings, $15.3B in total. Ken Fisher, Bill Nygren, Cliff Asness, Jeremy Grantham, Howard Gleicher, Josef Lakonishok.
Who is the largest superinvestor holder of MRK?
The largest holder is Ken Fisher (Fisher Investments), with $6.1B, 1.7% of the portfolio.
From Merck & Company's annual reports filed with the SEC (XBRL data), standardised by Investingly. Information only, not investment advice.