Security record
MRK
Merck & Co., Inc. · Healthcare · Drug Manufacturers - General
183Tracked holders
0Δ holders
1.60BShares held
$205.60BReported value
+4New positions
−3Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow +1.0% · net new positions +0.5% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 183 | 0 | 1.60B | $205.60B | +4 | −3 |
| Q1 2026 | 185 | +1 | 1.56B | $186.85B | +3 | −3 |
| Q4 2025 | 183 | 0 | 1.68B | $176.48B | +1 | — |
| Q3 2025 | 27 | 0 | 972.48M | $81.66B | +1 | −2 |
| Q2 2025 | 25 | 0 | 887.01M | $70.29B | +1 | −1 |
| Q1 2025 | 22 | -1 | 386.62M | $34.78B | — | −1 |
| Q4 2024 | 23 | -1 | 374.82M | $37.37B | — | −1 |
| Q3 2024 | 23 | +1 | 256.79M | $29.14B | +1 | — |
| Q2 2024 | 22 | — | 256.16M | $31.70B | — | — |
Who holds it · Q2 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 227.00M | +0.5% | $29.17B | 0.4% | ▲ Add | 5 | SEC ↗ |
| 24 | Vanguard Capital Management Llc | 161.32M | +0.2% | $20.73B | 0.4% | ▲ Add | 2 | SEC ↗ |
| 25 | State Street Global Advisors ✦ (passive) | 120.41M | +0.9% | $15.57B | 0.5% | ▲ Add | 7 | SEC ↗ |
| 26 | Wellington Management ✦ | 86.25M | +2.3% | $11.08B | 1.9% | ▲ Add | 9 | SEC ↗ |
| 27 | Wellington Management ✦ | 86.25M | +2.3% | $11.08B | 1.9% | ▲ Add | 9 | SEC ↗ |
| 28 | Wellington Management ✦ | 86.25M | +2.3% | $11.08B | 1.9% | ▲ Add | 9 | SEC ↗ |
| 29 | Wellington Management ✦ | 86.25M | +2.3% | $11.08B | 1.9% | ▲ Add | 9 | SEC ↗ |
| 30 | Wellington Management ✦ | 86.25M | +2.3% | $11.08B | 1.9% | ▲ Add | 9 | SEC ↗ |
| 31 | Wellington Management ✦ | 86.25M | +2.3% | $11.08B | 1.9% | ▲ Add | 9 | SEC ↗ |
| 32 | Wellington Management ✦ | 86.25M | +2.3% | $11.08B | 1.9% | ▲ Add | 9 | SEC ↗ |
| 33 | Wellington Management ✦ | 86.25M | +2.3% | $11.08B | 1.9% | ▲ Add | 9 | SEC ↗ |
| 34 | Wellington Management ✦ | 86.25M | +2.3% | $11.08B | 1.9% | ▲ Add | 9 | SEC ↗ |
| 35 | Geode Capital Management ✦ (passive) | 60.74M | +2.0% | $7.79B | 0.4% | ▲ Add | 9 | SEC ↗ |
| 36 | Geode Capital Management ✦ (passive) | 60.74M | +2.0% | $7.79B | 0.4% | ▲ Add | 9 | SEC ↗ |
| 37 | Charles Schwab Investment… | 54.37M | +9.2% | $6.99B | 0.9% | ▲ Add | 3 | SEC ↗ |
| 38 | Charles Schwab Investment… | 54.37M | +9.2% | $6.99B | 0.9% | ▲ Add | 3 | SEC ↗ |
| 39 | Charles Schwab Investment… | 54.37M | +9.2% | $6.99B | 0.9% | ▲ Add | 3 | SEC ↗ |
| 40 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 41 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 42 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 43 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 44 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 45 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 46 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 47 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 48 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 49 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 50 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 51 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 52 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 53 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 54 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 55 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 56 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 57 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 58 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 59 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 60 | Morgan Stanley ✦ | 48.64M | +2.1% | $6.25B | 0.3% | ▲ Add | 4 | SEC ↗ |
| 61 | Fidelity (FMR) ✦ | 45.44M | +2.1% | $5.84B | 0.3% | ▲ Add | 5 | SEC ↗ |
| 62 | Fidelity (FMR) ✦ | 45.44M | +2.1% | $5.84B | 0.3% | ▲ Add | 5 | SEC ↗ |
| 63 | Fidelity (FMR) ✦ | 45.44M | +2.1% | $5.84B | 0.3% | ▲ Add | 5 | SEC ↗ |
| 64 | Fidelity (FMR) ✦ | 45.44M | +2.1% | $5.84B | 0.3% | ▲ Add | 5 | SEC ↗ |
| 65 | Fidelity (FMR) ✦ | 45.44M | +2.1% | $5.84B | 0.3% | ▲ Add | 5 | SEC ↗ |
| 66 | Fidelity (FMR) ✦ | 45.44M | +2.1% | $5.84B | 0.3% | ▲ Add | 5 | SEC ↗ |
| 67 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 68 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 69 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 70 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 71 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 72 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 73 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 74 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 75 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 76 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 77 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 78 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 79 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 80 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 81 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 82 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 83 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 84 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 85 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 86 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 87 | JPMorgan Chase ✦ | 43.89M | -17.1% | $5.68B | 0.3% | ▼ Trim | 4 | SEC ↗ |
| 88 | Fisher Asset Management ✦ | 38.52M | +45.7% | $4.95B | 1.5% | ▲ Add | 9 | SEC ↗ |
| 89 | Norges Bank ✦ (passive) | 36.98M | New | $4.75B | 0.5% | New | 1 | SEC ↗ |
| 90 | Bank Of America Corp /De/ | 30.54M | -0.8% | $3.92B | 0.3% | ▼ Trim | 3 | SEC ↗ |
| 91 | Bank Of America Corp /De/ | 30.54M | -0.8% | $3.92B | 0.3% | ▼ Trim | 3 | SEC ↗ |
| 92 | Bank Of America Corp /De/ | 30.54M | -0.8% | $3.92B | 0.3% | ▼ Trim | 3 | SEC ↗ |
| 93 | Bank Of America Corp /De/ | 30.54M | -0.8% | $3.92B | 0.3% | ▼ Trim | 3 | SEC ↗ |
| 94 | Bank Of America Corp /De/ | 30.54M | -0.8% | $3.92B | 0.3% | ▼ Trim | 3 | SEC ↗ |
| 95 | Bank Of America Corp /De/ | 30.54M | -0.8% | $3.92B | 0.3% | ▼ Trim | 3 | SEC ↗ |
| 96 | Bank Of America Corp /De/ | 30.54M | -0.8% | $3.92B | 0.3% | ▼ Trim | 3 | SEC ↗ |
| 97 | Bank Of America Corp /De/ | 30.54M | -0.8% | $3.92B | 0.3% | ▼ Trim | 3 | SEC ↗ |
| 98 | Northern Trust Corp | 26.28M | -3.0% | $3.38B | 0.4% | ▼ Trim | 3 | SEC ↗ |
| 99 | Northern Trust Corp | 26.28M | -3.0% | $3.38B | 0.4% | ▼ Trim | 3 | SEC ↗ |
| 100 | Northern Trust Corp | 26.28M | -3.0% | $3.38B | 0.4% | ▼ Trim | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Norges Bank | $4.75B | 0.5% |
Exited
| Marshall Wace | $334.20M | was 0.4% |
| Peak6 Llc | $5.84M | was 0.2% |
| Optiver Holding B.V. | $518,811 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 3,742 holders, 1.88B shares, $215.80B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Aug 13
Guindo Chirfi
Officer · 10.00K sh · $1.35M
Aug 12
Zachary Jennifer
Officer · 80.31K sh · $10.72M
Aug 12
DeLuca Richard R.
Officer · 11.10K sh · $1.46M
Aug 12
DeLuca Richard R.
Officer · 600 sh · $79,222
Aug 11
DeLuca Richard R.
Officer · 5.43K sh · $718,261
Aug 11
DeLuca Richard R.
Officer · 7.41K sh · $973,165
Aug 10
DeLuca Richard R.
Officer · 20.78K sh · $2.71M
Aug 06
DeLuca Richard R.
Officer · 805 sh · $105,472
Aug 06
DeLuca Richard R.
Officer · 4.95K sh · $643,993
Aug 06
DeLuca Richard R.
Officer · 300 sh · $39,307
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2026 ·
Methodology ·
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