Boundless Bio, Inc. · NASDAQ:BOLD
Boundless Bio, Inc. shareholders
As of Jun 30, 2026, 39 institutions reported holding Boundless Bio, Inc., 67.3% of its shares. Largest: ARCH Venture Management, LLC, Fidelity and Tang Capital Management LLC. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Boundless Bio, Inc. | Change | Filed |
|---|---|---|---|---|
| ARCH Venture Management, LLC | 2.69M | 11.8% | new | Aug 14, 2026 |
| Fidelity | 2.58M | 11.3% | −114K | Aug 13, 2026 |
| Tang Capital Management LLC | 2.56M | 11.3% | new | Aug 14, 2026 |
| ADAR1 Capital Management, LLC | 1.97M | 8.7% | new | Aug 14, 2026 |
| Cormorant Asset Management, LP | 1M | 4.4% | new | Aug 14, 2026 |
| Vanguard | 680K | 3.0% | +17,731 | Aug 13, 2026 |
| Wellington | 556K | 2.4% | no change | Aug 14, 2026 |
| Millennium | 479K | 2.1% | +379K | Aug 14, 2026 |
| Renaissance Technologies | 472K | 2.1% | +72,570 | Aug 13, 2026 |
| Alyeska Investment Group, L.P. | 300K | 1.3% | no change | Aug 14, 2026 |