WDC
Western Digital Corporation · Technology · Computer Hardware
Momentum inputs (comparable managers):
holder breadth -8.3% ·
share flow -0.9% ·
net new positions -13.6%
· formula
Broad distribution: falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 4 | 0 | 489.93K | $190.44M | n/a | n/a |
| Q2 2026 | 178 | +6 | 267.40M | $170.59B | +9 | −4 |
| Q1 2026 | 176 | +4 | 311.56M | $74.93B | +5 | −2 |
| Q4 2025 | 171 | +2 | 309.15M | $54.13B | +3 | n/a |
| Q3 2025 | 22 | -2 | 185.98M | $22.32B | +1 | −4 |
| Q2 2025 | 22 | +1 | 156.23M | $9.99B | +1 | n/a |
| Q1 2025 | 18 | -1 | 44.90M | $1.81B | +1 | −2 |
| Q4 2024 | 19 | +1 | 50.55M | $3.01B | +1 | n/a |
| Q3 2024 | 17 | +1 | 38.18M | $2.61B | +3 | −2 |
| Q2 2024 | 16 | n/a | 48.73M | $3.69B | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 43.28M | +0.6% | $5.20B | 0.1% | ▲ Add | 2 | SEC ↗ ×5 |
| 2 | BlackRock ✦ (passive) | 34.71M | -0.8% | $4.17B | 0.1% | ▼ Trim | 2 | SEC ↗ ×25 |
| 3 | JPMorgan Chase ✦ | 24.04M | n/a | $2.89B | 0.1% | n/c | 1 | SEC ↗ ×38 |
| 4 | Fidelity (FMR) ✦ | 23.76M | -26.4% | $2.85B | 0.1% | ▼ Trim | 2 | SEC ↗ ×10 |
| 5 | State Street Global Advisors ✦ (passive) | 15.46M | +1.8% | $1.86B | 0.1% | ▲ Add | 4 | SEC ↗ ×2 |
| 6 | D. E. Shaw & Co. ✦ | 9.63M | +231.1% | $1.16B | 1.0% | ▲ Add | 6 | SEC ↗ ×3 |
| 7 | Geode Capital Management ✦ (passive) | 9.41M | +1.2% | $1.13B | 0.1% | ▲ Add | 6 | SEC ↗ ×2 |
| 8 | Morgan Stanley ✦ | 8.40M | n/a | $1.01B | 0.1% | n/c | 1 | SEC ↗ ×21 |
| 9 | Citadel Advisors ✦ | 3.73M | +6.0% | $447.54M | 0.4% | ▲ Add | 6 | SEC ↗ ×3 |
| 10 | T. Rowe Price ✦ | 2.57M | -27.2% | $308.29M | 0.0% | ▼ Trim | 6 | SEC ↗ ×2 |
| 11 | Goldman Sachs Group ✦ | 2.51M | n/a | $300.83M | 0.0% | n/c | 1 | SEC ↗ ×6 |
| 12 | AQR Capital Management ✦ | 1.74M | +41.5% | $209.39M | 0.1% | ▲ Add | 6 | SEC ↗ ×7 |
| 13 | Two Sigma Investments ✦ | 1.28M | +163.5% | $153.91M | 0.2% | ▲ Add | 6 | SEC ↗ ×2 |
| 14 | Millennium Management ✦ | 1.23M | +229.1% | $147.89M | 0.1% | ▲ Add | 6 | SEC ↗ ×2 |
| 15 | Renaissance Technologies ✦ | 1.15M | +469.2% | $137.92M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 16 | PRIMECAP Management ✦ | 965.07K | -10.0% | $115.87M | 0.1% | ▼ Trim | 6 | SEC ↗ |
| 17 | Point72 Asset Management ✦ | 929.58K | +11.2% | $111.60M | 0.3% | ▲ Add | 2 | SEC ↗ |
| 18 | Gotham Asset Management ✦ | 531.73K | +5.3% | $63.84M | 0.3% | ▲ Add | 6 | SEC ↗ |
| 19 | Marshall Wace ✦ | 322.40K | +590.8% | $38.71M | 0.0% | ▲ Add | 6 | SEC ↗ ×2 |
| 20 | Adage Capital Partners ✦ | 240.84K | -10.7% | $28.91M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 21 | Bridgewater Associates ✦ | 51.96K | New | $6.24M | 0.0% | New | 1 | SEC ↗ |
| 22 | Wellington Management ✦ | 29.79K | -3.7% | $3.58M | 0.0% | ▼ Trim | 6 | SEC ↗ ×6 |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Bridgewater Associates | $6.24M | 0.0% |
Exited
| Norges Bank | $220.68M | was 0.0% |
| Elliott Investment Management | $143.98M | was 1.2% |
| Glenview Capital | $38.43M | was 1.1% |
| Soros Fund Management | $8.60M | was 0.2% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,400 holders, 309.91M shares, $81.45B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
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)
Officer · 1.79K sh · $825,472
Officer · 432 sh · $194,918
Officer · 1.01K sh · $481,709
Officer · 476 sh · $214,571
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology