SLDB Solid Biosciences Inc.
Solid Biosciences Inc. (SLDB) Institutional Ownership
What the institutions did with SLDB last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 12.0M | 10.5% |
| PERCEPTIVE ADVISORS LLC | 11.9M | 10.4% |
| Bain Capital Life Sciences Investors, LLC | 9.8M | 8.6% |
| Siren, L.L.C. | 7.7M | 6.7% |
| BlackRock, Inc. | 6.9M | 6.1% |
| FMR LLC | 6.9M | 6.0% |
| ARMISTICE CAPITAL, LLC | 4.3M | 3.7% |
| STATE STREET CORP | 4.2M | 3.6% |
| Jupiter Topco LLC | 4.0M | 3.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.0M | 3.5% |
| RTW INVESTMENTS, LP | 3.9M | 3.4% |
| Deep Track Capital, LP | 3.6M | 3.1% |
| FRANKLIN RESOURCES INC | 3.4M | 3.0% |
| CITADEL ADVISORS LLC | 2.8M | 2.5% |
| Alyeska Investment Group, L.P. | 2.3M | 2.0% |
| AMERIPRISE FINANCIAL INC | 2.2M | 1.9% |
| Vestal Point Capital, LP | 2.2M | 1.9% |
| Redmile Group, LLC | 1.9M | 1.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.9M | 1.7% |
| GOLDMAN SACHS GROUP INC | 1.6M | 1.4% |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 1.5M | 1.3% |
| DIMENSIONAL FUND ADVISORS LP | 1.3M | 1.1% |
| BLAIR WILLIAM & CO/IL | 756.3K | 0.7% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 748.6K | 0.7% |
| Woodline Partners LP | 674.1K | 0.6% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| RTW INVESTMENTS, LP | New | 0 | 3.9M | +3.9M |
| FMR LLC | Increased | 3.6M | 6.9M | +3.3M |
| STATE STREET CORP | Increased | 1.1M | 4.2M | +3.0M |
| Vestal Point Capital, LP | Reduced | 5.0M | 2.2M | -2.8M |
| RA CAPITAL MANAGEMENT, L.P. | Increased | 9.3M | 12.0M | +2.7M |
| BlackRock, Inc. | Increased | 5.0M | 6.9M | +2.0M |
| Point72 Asset Management, L.P. | Reduced | 2.1M | 448.0K | -1.6M |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 2.7M | 4.0M | +1.3M |
| FRANKLIN RESOURCES INC | Increased | 2.2M | 3.4M | +1.2M |
| Nantahala Capital Management, LLC | Sold Out | 1.2M | 0 | -1.2M |
| ARMISTICE CAPITAL, LLC | Increased | 3.2M | 4.3M | +1.1M |
| Monashee Investment Management LLC | Reduced | 1.4M | 500.0K | -920.3K |
| SILVERARC CAPITAL MANAGEMENT, LLC | New | 0 | 668.5K | +668.5K |
| GOLDMAN SACHS GROUP INC | Increased | 935.5K | 1.6M | +667.4K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.3M | 1.9M | +644.8K |
| Ally Bridge Group (NY) LLC | Reduced | 767.0K | 256.0K | -511.0K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 338.6K | 748.6K | +410.0K |
| MILLENNIUM MANAGEMENT LLC | Sold Out | 363.7K | 0 | -363.7K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 956.1K | 1.3M | +310.2K |
| Parkman Healthcare Partners LLC | Sold Out | 308.8K | 0 | -308.8K |
| MOORE CAPITAL MANAGEMENT, LP | Increased | 324.7K | 603.5K | +278.7K |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Reduced | 1.8M | 1.5M | -250.0K |
| Ikarian Capital, LLC | Reduced | 264.4K | 43.0K | -221.5K |
| CITADEL ADVISORS LLC | Increased | 2.6M | 2.8M | +218.3K |
| AMERIPRISE FINANCIAL INC | Reduced | 2.4M | 2.2M | -213.1K |
| Invesco Ltd. | Reduced | 340.9K | 143.4K | -197.5K |
| NORTHERN TRUST CORP | Increased | 418.2K | 603.6K | +185.4K |
| Woodline Partners LP | Increased | 495.1K | 674.1K | +179.0K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 326.0K | 494.7K | +168.8K |
| Nuveen, LLC | Reduced | 400.3K | 241.6K | -158.7K |
| Soleus Capital Management, L.P. | New | 0 | 150.0K | +150.0K |
| BANK OF AMERICA CORP /DE/ | Increased | 386.8K | 524.1K | +137.3K |
| Qube Research & Technologies Ltd | New | 0 | 136.9K | +136.9K |
| ALGERT GLOBAL LLC | Increased | 72.7K | 187.4K | +114.8K |
| Y-Intercept (Hong Kong) Ltd | New | 0 | 109.9K | +109.9K |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 217.2K | 108.2K | -109.0K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 269.7K | 163.0K | -106.7K |
| Bank of New York Mellon Corp | Increased | 137.9K | 243.2K | +105.2K |
| BLAIR WILLIAM & CO/IL | Increased | 651.2K | 756.3K | +105.1K |
| ALPS ADVISORS INC | New | 0 | 99.9K | +99.9K |
| D. E. Shaw & Co., Inc. | Increased | 128.3K | 222.8K | +94.4K |
| PANAGORA ASSET MANAGEMENT INC | Sold Out | 91.1K | 0 | -91.1K |
| Susquehanna Portfolio Strategies, LLC | Reduced | 197.6K | 107.3K | -90.3K |
| UBS Group AG | Increased | 99.0K | 188.3K | +89.4K |
| Jump Financial, LLC | New | 0 | 88.2K | +88.2K |
| HRT FINANCIAL LP | Sold Out | 86.9K | 0 | -86.9K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Increased | 160.7K | 244.4K | +83.7K |
| Verition Fund Management LLC | New | 0 | 81.3K | +81.3K |
| CITIGROUP INC | Increased | 69.4K | 148.4K | +79.1K |
| Quadrature Capital Ltd | New | 0 | 78.3K | +78.3K |
| Rafferty Asset Management, LLC | New | 0 | 71.8K | +71.8K |
| BOOTHBAY FUND MANAGEMENT, LLC | Reduced | 87.0K | 19.9K | -67.1K |
| Redmile Group, LLC | Reduced | 2.0M | 1.9M | -63.2K |
| Virtu Financial LLC | Sold Out | 59.7K | 0 | -59.7K |
| DeepCurrents Investment Group LLC | New | 0 | 59.2K | +59.2K |
| Trexquant Investment LP | Reduced | 123.9K | 69.1K | -54.8K |
| AMERICAN CENTURY COMPANIES INC | Reduced | 114.4K | 62.2K | -52.2K |
| BANK OF NOVA SCOTIA | New | 0 | 47.2K | +47.2K |
| Virtus Investment Advisers, LLC | New | 0 | 45.8K | +45.8K |
| Squarepoint Ops LLC | Sold Out | 44.8K | 0 | -44.8K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.