SLDB
Solid Biosciences Inc. · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth -7.1% ·
share flow +15.7% ·
net new positions -7.7%
— formula
Concentrated accumulation — rising shares among fewer 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 | +6 | 45.63M | $455.47M | +9 | −3 |
| Q1 2026 | 69 | 0 | 38.87M | $279.42M | +3 | −3 |
| Q4 2025 | 68 | +2 | 30.07M | $169.59M | +2 | — |
| Q3 2025 | 17 | +1 | 23.96M | $147.82M | +1 | — |
| Q2 2025 | 13 | -1 | 26.02M | $126.70M | +1 | −2 |
| Q1 2025 | 11 | +1 | 11.02M | $40.79M | +3 | −2 |
| Q4 2024 | 10 | -1 | 4.93M | $19.74M | +1 | −2 |
| Q3 2024 | 10 | +1 | 5.36M | $37.37M | +1 | — |
| Q2 2024 | 9 | — | 5.20M | $29.49M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Adage Capital Partners ✦ | 6.73M | 0.0% | $32.77M | 0.1% | Held | 5 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 4.92M | — | $23.96M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 4.92M | — | $23.96M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 4.92M | — | $23.96M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 4.92M | — | $23.96M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 4.92M | — | $23.96M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 4.92M | — | $23.96M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 4.92M | — | $23.96M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 4.92M | — | $23.96M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | The Vanguard Group ✦ (passive) | 3.37M | — | $16.39M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | The Vanguard Group ✦ (passive) | 3.37M | — | $16.39M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | The Vanguard Group ✦ (passive) | 3.37M | — | $16.39M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | Fidelity (FMR) ✦ | 3.18M | — | $15.48M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | Citadel Advisors ✦ | 2.52M | +33.8% | $12.29M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 15 | Geode Capital Management ✦ (passive) | 1.51M | +184.5% | $7.36M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 16 | Geode Capital Management ✦ (passive) | 1.51M | +184.5% | $7.36M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 17 | Point72 Asset Management ✦ | 1.27M | +528.6% | $6.17M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 18 | Millennium Management ✦ | 1.10M | +105.7% | $5.35M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 19 | State Street Global Advisors ✦ (passive) | 951.45K | +118.1% | $4.63M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 20 | Two Sigma Investments ✦ | 174.00K | +150.4% | $847,380 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 21 | Wellington Management ✦ | 135.76K | New | $661,156 | 0.0% | New | 1 | SEC ↗ |
| 22 | Wellington Management ✦ | 135.76K | New | $661,156 | 0.0% | New | 1 | SEC ↗ |
| 23 | Wellington Management ✦ | 135.76K | New | $661,156 | 0.0% | New | 1 | SEC ↗ |
| 24 | AQR Capital Management ✦ | 130.08K | +15.0% | $633,510 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 25 | AQR Capital Management ✦ | 130.08K | +15.0% | $633,510 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 26 | AQR Capital Management ✦ | 130.08K | +15.0% | $633,510 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 27 | AQR Capital Management ✦ | 130.08K | +15.0% | $633,510 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 28 | T. Rowe Price ✦ | 33.08K | +186.2% | $162,000 | 0.0% | ▲ Add | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Wellington Management | $661,156 | 0.0% |
| Wellington Management | $661,156 | 0.0% |
| Wellington Management | $661,156 | 0.0% |
Exited
| Marshall Wace | $1.24M | was 0.0% |
| Renaissance Technologies | $648,980 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 137 holders, 96.05M shares, $689.27M 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.