| 9.963% |
| 5.83% |
| 4 | Siren, L.L.C. | 7.7M | $76.8M | 0.0% | 7.812% | 1.55% |
| 5 | BlackRock, Inc. | 6.9M | $69.3M | +39.9% | 7.043% | 0.00% |
| 6 | FMR LLC | 6.9M | $68.7M | +90.7% | 6.984% | 0.00% |
| 7 | ARMISTICE CAPITAL, LLC | 4.3M | $42.7M | +33.7% | 4.345% | 0.52% |
| 8 | STATE STREET CORP | 4.2M | $41.7M | +271.0% | 4.241% | 0.00% |
| 9 | Jupiter Topco LLC | 4.0M | $40.4M | — | 4.107% | 0.02% |
| 10 | VANGUARD CAPITAL MANAGEMENT LLC | 4.0M | $40.1M | +49.9% | 4.073% | 0.00% |
| 11 | RTW INVESTMENTS, LP | 3.9M | $38.9M | — | 3.954% | 0.33% |
| 12 | Deep Track Capital, LP | 3.6M | $35.6M | 0.0% | 3.621% | 0.52% |
| 13 | FRANKLIN RESOURCES INC | 3.4M | $34.4M | +56.9% | 3.495% | 0.01% |
| 14 | CITADEL ADVISORS LLC | 2.8M | $28.4M | +7.5% | 2.891% | 0.00% |
| 15 | Alyeska Investment Group, L.P. | 2.3M | $22.8M | +0.0% | 2.316% | 0.06% |
| 16 | AMERIPRISE FINANCIAL INC | 2.2M | $22.2M | -8.7% | 2.261% | 0.00% |
| 17 | Vestal Point Capital, LP | 2.2M | $21.6M | -56.8% | 2.194% | 0.50% |
| 18 | Redmile Group, LLC | 1.9M | $19.5M | -3.1% | 1.979% | 1.31% |
| 19 | GEODE CAPITAL MANAGEMENT, LLC | 1.9M | $19.4M | +49.8% | 1.971% | 0.00% |
| 20 | GOLDMAN SACHS GROUP INC | 1.7M | $17.0M | +82.0% | 1.730% | 0.00% |
| 21 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 1.5M | $15.0M | -14.2% | 1.530% | 0.02% |
| 22 | DIMENSIONAL FUND ADVISORS LP | 1.3M | $12.6M | +32.4% | 1.286% | 0.00% |
| 23 | BLAIR WILLIAM & CO/IL | 756K | $7.6M | +16.1% | 0.768% | 0.02% |
| 24 | VANGUARD PORTFOLIO MANAGEMENT LLC | 749K | $7.5M | +121.1% | 0.760% | 0.00% |
| 25 | Woodline Partners LP | 674K | $6.7M | +36.2% | 0.685% | 0.02% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in SLDB — a direct measure of their conviction.
Institutions that fully closed their SLDB position in Q2 2026
| 106.23% |
| +70.23 pp |
| $285M |
| +101% |
| Q4 2024 | 90 | 2.2% | 36.00% | +0.45 pp | $141M | 42% |
| Q3 2024 | 92 | — | 35.55% | — | $243M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
34 institutions opened new positions in SLDB during Q2 2026, while 25 fully exited. 98 added to existing positions and 22 trimmed.
SLDB institutional ownership rose by 7.86 percentage points quarter-over-quarter, with a net change of +5 holders.
The top 10 institutions account for 62.6% of all reported 13F value in SLDB, and the top 25 account for 89.6%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Solid Biosciences Inc. (SLDB) Institutional Ownership