BPMC
Blueprint Medicines Corporation · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth +28.6% ·
share flow -23.8% ·
net new positions +20.0%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 6.42M | — | $822.48M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 2 | BlackRock ✦ (passive) | 6.12M | — | $784.26M | 0.0% | n/c | 1 | SEC ↗ ×17 |
| 3 | State Street Global Advisors ✦ (passive) | 2.23M | -16.9% | $285.97M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 1.54M | +1.2% | $197.55M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 5 | T. Rowe Price ✦ | 1.46M | -73.0% | $187.78M | 0.0% | ▼ Trim | 5 | SEC ↗ ×2 |
| 6 | Norges Bank ✦ (passive) | 1.07M | +78.3% | $137.79M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 7 | Renaissance Technologies ✦ | 674.50K | New | $86.46M | 0.1% | New | 1 | SEC ↗ |
| 8 | Fidelity (FMR) ✦ | 558.96K | — | $71.65M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 9 | Wellington Management ✦ | 435.98K | -85.8% | $55.88M | 0.0% | ▼ Trim | 5 | SEC ↗ ×6 |
| 10 | Millennium Management ✦ | 295.88K | -57.2% | $37.93M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 11 | Soros Fund Management ✦ | 250.00K | New | $32.05M | 0.9% | New | 1 | SEC ↗ |
| 12 | AQR Capital Management ✦ | 92.47K | -37.6% | $11.85M | 0.0% | ▼ Trim | 5 | SEC ↗ ×5 |
| 13 | Adage Capital Partners ✦ | 50.00K | New | $6.41M | 0.0% | New | 1 | SEC ↗ |
| 14 | Marshall Wace ✦ | 31.90K | +200.9% | $4.09M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 15 | Arrowstreet Capital ✦ | 29.56K | New | $3.79M | 0.0% | New | 1 | SEC ↗ |
| 16 | Citadel Advisors ✦ | 25.09K | -2.0% | $3.22M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 17 | Fisher Asset Management ✦ | 7.46K | -97.6% | $956,093 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 18 | GAMCO Investors ✦ | 7.00K | New | $897,260 | 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
| Renaissance Technologies | $86.46M | 0.1% |
| Soros Fund Management | $32.05M | 0.9% |
| Adage Capital Partners | $6.41M | 0.0% |
| Arrowstreet Capital | $3.79M | 0.0% |
| GAMCO Investors | $897,260 | 0.0% |
Exited
| D. E. Shaw & Co. | $34.43M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 2 holders, 301 shares, $38,583 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.