Who owns SLDB?
Institutional ownership of Solid Biosciences Inc. from Form 13F, Q2 2026
156 institutional managers reported holding Solid Biosciences Inc. (SLDB) in Form 13F filings for Q2 2026, with 114,547,916 shares worth $1.1B. The largest reported holder was Ra Capital Management, L.p. Managers that filed both quarters added a net 14,651,818 shares (+15.3%). 41 opened new positions and 23 sold out.
- Funds holding
- 156
- Value held
- $1.1B
- New / sold out
- 41 / 23
- Net shares, same filers
- +15.3%
Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
Largest holders of SLDB
| Fund | Value | Share of 13F holdings | Shares | Move |
|---|---|---|---|---|
| Ra Capital Management, L.p. | $120M | 10.5% | 12,036,126 | Added |
| Perceptive Advisors LLC | $119M | 10.4% | 11,906,646 | Unchanged |
| Bain Capital Life Sciences Investors, LLC | $98.0M | 8.6% | 9,808,819 | Unchanged |
| Siren, L.L.C. | $76.8M | 6.7% | 7,690,405 | Unchanged |
| BlackRock, Inc. | $69.3M | 6.1% | 6,934,248 | Added |
| FMR LLC | $68.7M | 6.0% | 6,875,957 | Added |
| Armistice Capital, LLC | $42.7M | 3.7% | 4,278,000 | Added |
| State Street Corp | $41.7M | 3.6% | 4,175,365 | Added |
| Jupiter Topco LLC | $40.4M | 3.5% | 4,043,605 | First report |
| Vanguard Capital Management LLC | $40.1M | 3.5% | 4,009,922 | Added |
| RTW Investments, LP | $38.9M | 3.4% | 3,892,926 | New |
| Deep Track Capital, LP | $35.6M | 3.1% | 3,565,062 | Unchanged |
| Franklin Resources Inc | $34.4M | 3.0% | 3,440,708 | Added |
| Citadel Advisors LLC | $28.1M | 2.5% | 2,815,122 | Added |
| Alyeska Investment Group, L.P. | $22.8M | 2.0% | 2,280,484 | Unchanged |
| Ameriprise Financial Inc | $22.2M | 1.9% | 2,225,783 | Trimmed |
| Vestal Point Capital, LP | $21.6M | 1.9% | 2,160,000 | Trimmed |
| Redmile Group, LLC | $19.5M | 1.7% | 1,948,695 | Trimmed |
| Geode Capital Management, LLC | $19.4M | 1.7% | 1,940,824 | Added |
| Goldman Sachs Group Inc | $16.0M | 1.4% | 1,602,917 | Added |
| Adage Capital Partners GP, L.l.c. | $15.0M | 1.3% | 1,506,506 | Trimmed |
| Dimensional Fund Advisors LP | $12.6M | 1.1% | 1,266,290 | Added |
| Blair William & Co | $7.6M | 0.7% | 756,277 | Added |
| Vanguard Portfolio Management LLC | $7.5M | 0.7% | 748,589 | Added |
| Woodline Partners LP | $6.7M | 0.6% | 674,076 | Added |
Share of 13F holdings is each fund's shares as a share of the 114,547,916 SLDB shares all 13F filers reported, not of shares outstanding.
Biggest buyers in Q2 2026
- RTW Investments, LP New+$38.9M
- FMR LLC Added+$32.7M
- State Street Corp Added+$30.5M
- Ra Capital Management, L.p. Added+$26.9M
- BlackRock, Inc. Added+$19.7M
- Vanguard Capital Management LLC Added+$13.3M
- Franklin Resources Inc Added+$12.5M
- Armistice Capital, LLC Added+$10.8M
- Silverarc Capital Management, LLC New+$6.7M
- Goldman Sachs Group Inc Added+$6.7M
Biggest sellers in Q2 2026
- Vestal Point Capital, LP Trimmed-$28.4M
- Point72 Asset Management, L.P. Trimmed-$16.0M
- Monashee Investment Management LLC Trimmed-$9.2M
- Nantahala Capital Management, LLC Sold out-$8.4M
- Ally Bridge Group (NY) LLC Trimmed-$5.1M
- Millennium Management LLC Sold out-$2.6M
- Adage Capital Partners GP, L.l.c. Trimmed-$2.5M
- Parkman Healthcare Partners LLC Sold out-$2.2M
- Ikarian Capital, LLC Trimmed-$2.2M
- Ameriprise Financial Inc Trimmed-$2.1M
The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $247M and sold $93.9M; 56 added and 37 trimmed.
Schedule 13D and 13G filings on SLDB
Owners of more than 5% must file within days, so these can be newer than the 13F data.
- 2026-08-06FMR LLC SCHEDULE 13G filed by Solid Biosciences Inc.Schedule 13G
- 2026-07-30BlackRock, Inc. SCHEDULE 13G filed by BlackRock Inc.Schedule 13G
- 2025-07-18BlackRock, Inc. SCHEDULE 13G filed by BlackRock Inc.Schedule 13G
- 2025-05-12Adage Capital Management, L.P. SCHEDULE 13G filed by Solid Biosciences Inc.Schedule 13G
Questions about SLDB ownership
- Who owns SLDB stock?
- 156 institutional investment managers reported SLDB positions in their Form 13F filings for Q2 2026, holding 114,547,916 shares worth $1.1B in total. Ra Capital Management, L.p. reported the largest position.
- Are funds buying or selling SLDB?
- In Q2 2026, 41 managers opened new SLDB positions, 56 added, 37 trimmed and 23 sold out. Managers that filed in both quarters added a net 14,651,818 shares.
- How current is this SLDB institutional ownership data?
- It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to SLDB by CUSIP. Options are left out. SLDB news and filings · SLDB insider trades · Top funds