Security record · archived quarter
MRK
Merck & Co., Inc. · Healthcare · Drug Manufacturers - General
25Tracked holders
0Δ holders
887.01MShares held
$70.29BReported value
+1New positions
−1Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -0.3% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
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 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 252.91M | — | $20.02B | 0.3% | n/c | 1 | SEC ↗ |
| 2 | The Vanguard Group ✦ (passive) | 252.91M | — | $20.02B | 0.3% | n/c | 1 | SEC ↗ |
| 3 | The Vanguard Group ✦ (passive) | 252.91M | — | $20.02B | 0.3% | n/c | 1 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 252.91M | — | $20.02B | 0.3% | n/c | 1 | SEC ↗ |
| 5 | The Vanguard Group ✦ (passive) | 252.91M | — | $20.02B | 0.3% | n/c | 1 | SEC ↗ |
| 6 | The Vanguard Group ✦ (passive) | 252.91M | — | $20.02B | 0.3% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 19 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 20 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 21 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 22 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 23 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 24 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 25 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 26 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 27 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 28 | BlackRock ✦ (passive) | 218.34M | — | $17.28B | 0.3% | n/c | 1 | SEC ↗ |
| 29 | State Street Global Advisors ✦ (passive) | 118.49M | -1.7% | $9.47B | 0.4% | ▼ Trim | 3 | SEC ↗ |
| 30 | Wellington Management ✦ | 76.86M | -5.9% | $6.08B | 1.1% | ▼ Trim | 5 | SEC ↗ |
| 31 | Wellington Management ✦ | 76.86M | -5.9% | $6.08B | 1.1% | ▼ Trim | 5 | SEC ↗ |
| 32 | Wellington Management ✦ | 76.86M | -5.9% | $6.08B | 1.1% | ▼ Trim | 5 | SEC ↗ |
| 33 | Wellington Management ✦ | 76.86M | -5.9% | $6.08B | 1.1% | ▼ Trim | 5 | SEC ↗ |
| 34 | Wellington Management ✦ | 76.86M | -5.9% | $6.08B | 1.1% | ▼ Trim | 5 | SEC ↗ |
| 35 | Wellington Management ✦ | 76.86M | -5.9% | $6.08B | 1.1% | ▼ Trim | 5 | SEC ↗ |
| 36 | Wellington Management ✦ | 76.86M | -5.9% | $6.08B | 1.1% | ▼ Trim | 5 | SEC ↗ |
| 37 | Wellington Management ✦ | 76.86M | -5.9% | $6.08B | 1.1% | ▼ Trim | 5 | SEC ↗ |
| 38 | Wellington Management ✦ | 76.86M | -5.9% | $6.08B | 1.1% | ▼ Trim | 5 | SEC ↗ |
| 39 | Geode Capital Management ✦ (passive) | 58.95M | -1.2% | $4.65B | 0.3% | ▼ Trim | 5 | SEC ↗ |
| 40 | Geode Capital Management ✦ (passive) | 58.95M | -1.2% | $4.65B | 0.3% | ▼ Trim | 5 | SEC ↗ |
| 41 | Norges Bank ✦ (passive) | 36.11M | -5.5% | $2.86B | 0.4% | ▼ Trim | 5 | SEC ↗ |
| 42 | Fidelity (FMR) ✦ | 31.57M | — | $2.50B | 0.1% | n/c | 1 | SEC ↗ |
| 43 | Fidelity (FMR) ✦ | 31.57M | — | $2.50B | 0.1% | n/c | 1 | SEC ↗ |
| 44 | Fidelity (FMR) ✦ | 31.57M | — | $2.50B | 0.1% | n/c | 1 | SEC ↗ |
| 45 | Fidelity (FMR) ✦ | 31.57M | — | $2.50B | 0.1% | n/c | 1 | SEC ↗ |
| 46 | Fidelity (FMR) ✦ | 31.57M | — | $2.50B | 0.1% | n/c | 1 | SEC ↗ |
| 47 | Fidelity (FMR) ✦ | 31.57M | — | $2.50B | 0.1% | n/c | 1 | SEC ↗ |
| 48 | Fisher Asset Management ✦ | 25.01M | +2.3% | $1.98B | 0.8% | ▲ Add | 5 | SEC ↗ |
| 49 | Arrowstreet Capital ✦ | 19.46M | +35.5% | $1.54B | 1.1% | ▲ Add | 5 | SEC ↗ |
| 50 | T. Rowe Price ✦ | 10.80M | -8.2% | $854.77M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 51 | T. Rowe Price ✦ | 10.80M | -8.2% | $854.77M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 52 | D. E. Shaw & Co. ✦ | 10.37M | +11.3% | $820.71M | 0.9% | ▲ Add | 5 | SEC ↗ |
| 53 | D. E. Shaw & Co. ✦ | 10.37M | +11.3% | $820.71M | 0.9% | ▲ Add | 5 | SEC ↗ |
| 54 | Harris Associates (Oakmark) ✦ | 9.13M | +22.2% | $722.84M | 1.2% | ▲ Add | 4 | SEC ↗ |
| 55 | Harris Associates (Oakmark) ✦ | 9.13M | +22.2% | $722.84M | 1.2% | ▲ Add | 4 | SEC ↗ |
| 56 | AQR Capital Management ✦ | 8.79M | +13.3% | $690.15M | 0.6% | ▲ Add | 5 | SEC ↗ |
| 57 | AQR Capital Management ✦ | 8.79M | +13.3% | $690.15M | 0.6% | ▲ Add | 5 | SEC ↗ |
| 58 | AQR Capital Management ✦ | 8.79M | +13.3% | $690.15M | 0.6% | ▲ Add | 5 | SEC ↗ |
| 59 | AQR Capital Management ✦ | 8.79M | +13.3% | $690.15M | 0.6% | ▲ Add | 5 | SEC ↗ |
| 60 | AQR Capital Management ✦ | 8.79M | +13.3% | $690.15M | 0.6% | ▲ Add | 5 | SEC ↗ |
| 61 | AQR Capital Management ✦ | 8.79M | +13.3% | $690.15M | 0.6% | ▲ Add | 5 | SEC ↗ |
| 62 | AQR Capital Management ✦ | 8.79M | +13.3% | $690.15M | 0.6% | ▲ Add | 5 | SEC ↗ |
| 63 | Marshall Wace ✦ | 3.14M | +41236.9% | $248.92M | 0.3% | ▲ Add | 5 | SEC ↗ |
| 64 | Marshall Wace ✦ | 3.14M | +41236.9% | $248.92M | 0.3% | ▲ Add | 5 | SEC ↗ |
| 65 | Marshall Wace ✦ | 3.14M | +41236.9% | $248.92M | 0.3% | ▲ Add | 5 | SEC ↗ |
| 66 | Two Sigma Investments ✦ | 2.44M | +10.8% | $193.02M | 0.4% | ▲ Add | 5 | SEC ↗ |
| 67 | Adage Capital Partners ✦ | 1.43M | -29.7% | $112.82M | 0.2% | ▼ Trim | 5 | SEC ↗ |
| 68 | Bridgewater Associates ✦ | 1.15M | +115.1% | $91.09M | 0.4% | ▲ Add | 5 | SEC ↗ |
| 69 | Millennium Management ✦ | 989.79K | -71.9% | $78.35M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 70 | Gotham Asset Management ✦ | 479.08K | +21.2% | $37.92M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 71 | Fairfax Financial ✦ | 172.90K | 0.0% | $13.68M | 0.7% | Held | 5 | SEC ↗ |
| 72 | Dodge & Cox ✦ | 157.30K | +0.1% | $12.45M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 73 | Renaissance Technologies ✦ | 139.82K | -36.9% | $11.07M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 74 | GAMCO Investors ✦ | 69.20K | -4.7% | $5.48M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 75 | PRIMECAP Management ✦ | 51.90K | -9.7% | $4.11M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 76 | Point72 Asset Management ✦ | 5.80K | New | $459,128 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Point72 Asset Management | $459,128 | 0.0% |
Exited
| Citadel Advisors | $183.89M | was 0.2% |
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 2025 ·
Methodology ·
Get this via the API