FULC
Fulcrum Therapeutics, Inc. · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth +15.4% ·
share flow +14.9% ·
net new positions +13.3%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 72 | -4 | 45.92M | $168.41M | +4 | −8 |
| Q1 2026 | 78 | +4 | 31.56M | $242.15M | +9 | −5 |
| Q4 2025 | 74 | +3 | 26.56M | $300.41M | +3 | — |
| Q3 2025 | 15 | -3 | 15.03M | $138.26M | — | −3 |
| Q2 2025 | 15 | +2 | 16.83M | $115.80M | +2 | — |
| Q1 2025 | 10 | 0 | 7.12M | $20.50M | +1 | −1 |
| Q4 2024 | 10 | 0 | 6.97M | $32.77M | — | — |
| Q3 2024 | 9 | -1 | 6.03M | $21.54M | +1 | −2 |
| Q2 2024 | 10 | — | 5.45M | $33.81M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Adage Capital Partners ✦ | 4.59M | +53.0% | $31.57M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 4.38M | — | $30.13M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 4.38M | — | $30.13M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 4.38M | — | $30.13M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 4.38M | — | $30.13M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 4.38M | — | $30.13M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 4.38M | — | $30.13M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 4.38M | — | $30.13M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | The Vanguard Group ✦ (passive) | 3.15M | — | $21.65M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | The Vanguard Group ✦ (passive) | 3.15M | — | $21.65M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | The Vanguard Group ✦ (passive) | 3.15M | — | $21.65M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | State Street Global Advisors ✦ (passive) | 1.22M | -2.7% | $8.38M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 13 | Geode Capital Management ✦ (passive) | 1.19M | -3.1% | $8.21M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 14 | Geode Capital Management ✦ (passive) | 1.19M | -3.1% | $8.21M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 15 | D. E. Shaw & Co. ✦ | 1.18M | +102.7% | $8.10M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 16 | D. E. Shaw & Co. ✦ | 1.18M | +102.7% | $8.10M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 17 | Point72 Asset Management ✦ | 498.22K | New | $3.43M | 0.0% | New | 1 | SEC ↗ |
| 18 | Citadel Advisors ✦ | 166.23K | -55.6% | $1.14M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 19 | Citadel Advisors ✦ | 166.23K | -55.6% | $1.14M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 20 | Wellington Management ✦ | 126.40K | New | $869,646 | 0.0% | New | 1 | SEC ↗ |
| 21 | Wellington Management ✦ | 126.40K | New | $869,646 | 0.0% | New | 1 | SEC ↗ |
| 22 | Wellington Management ✦ | 126.40K | New | $869,646 | 0.0% | New | 1 | SEC ↗ |
| 23 | Millennium Management ✦ | 105.69K | +159.7% | $727,168 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 24 | Renaissance Technologies ✦ | 78.50K | -80.4% | $540,080 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 25 | T. Rowe Price ✦ | 69.03K | -1.6% | $475,000 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 26 | Two Sigma Investments ✦ | 58.97K | -60.8% | $405,679 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 27 | AQR Capital Management ✦ | 18.05K | +2.5% | $124,205 | 0.0% | ▲ Add | 4 | SEC ↗ |
| 28 | AQR Capital Management ✦ | 18.05K | +2.5% | $124,205 | 0.0% | ▲ Add | 4 | SEC ↗ |
| 29 | AQR Capital Management ✦ | 18.05K | +2.5% | $124,205 | 0.0% | ▲ Add | 4 | SEC ↗ |
| 30 | Fidelity (FMR) ✦ | 6.97K | — | $47,933 | 0.0% | n/c | 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 | $3.43M | 0.0% |
| Wellington Management | $869,646 | 0.0% |
| Wellington Management | $869,646 | 0.0% |
| Wellington Management | $869,646 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 167 holders, 71.69M shares, $540.27M 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.