Boundless Bio, Inc.
BOLD- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001782303
In the last 90 days, Boundless Bio, Inc. insiders filed 6 open-market purchases and 2 sales; 40 institutions reported holding it in 13F filings for Q2 2026, worth $38.3M in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in Boundless Bio, Inc. as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 35
- −9 vs. Q2 2025
- Shares held
- 9.62M
- −166.0K (−1.7%) vs. Q2 2025
- Total value
- $11.8M
- +$1.95M (+19.7%) vs. Q2 2025
- New holders
- 1
- 7 more added
- Sold out
- 10
- 15 more reduced
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting BOLD on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 40 | $38.3M |
| Q1 2026 | 36 | $9.33M |
| Q4 2025 | 36 | $10.5M |
| Q3 2025 | 35 | $11.8M |
| Q2 2025 | 44 | $9.88M |
| Q1 2025 | 54 | $19.6M |
| Q4 2024 | 55 | $37.6M |
| Q3 2024 | 55 | $46.1M |
| Q2 2024 | 47 | $53.4M |
| Q1 2024 | 43 | $208.8M |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Boundless Bio, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 3,098,071 | $3.81M | 0.00% | −27,032−0.9% | Reduced |
| Nextech Invest, Ltd. | 1,228,069 | $1.51M | 0.23% | 00.0% | Unchanged |
| Citadel Advisors LLC | 876,412 | $1.08M | 0.00% | +45,476+5.5% | Added |
| Sectoral Asset Management Inc | 678,574 | $834.6K | 0.52% | 00.0% | Unchanged |
| Vanguard Group Inc | 569,657 | $700.7K | 0.00% | +88,390+18.4% | Added |
| Wellington Management Group LLP | 556,233 | $684.2K | 0.00% | 00.0% | Unchanged |
| Stonepine Capital Management, LLC | 413,453 | $508.5K | 0.41% | +307,278+289.4% | Added |
| Alyeska Investment Group, L.P. | 300,000 | $369.0K | 0.00% | 00.0% | Unchanged |
| Redmile Group, LLC | 245,458 | $301.9K | 0.03% | −343,576−58.3% | Reduced |
| Renaissance Technologies LLC | 223,562 | $275.0K | 0.00% | +102,562+84.8% | Added |
| RBF Capital, LLC | 200,000 | $246.0K | 0.01% | 00.0% | Unchanged |
| Northern Trust Corp | 190,801 | $234.7K | 0.00% | −16,699−8.0% | Reduced |
| Ensign Peak Advisors, Inc | 187,500 | $230.6K | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 164,091 | $201.8K | 0.00% | −49,470−23.2% | Reduced |
| Sio Capital Management, LLC | 163,679 | $201.3K | 0.05% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 102,268 | $125.8K | 0.00% | +43,365+73.6% | Added |
| Almitas Capital LLC | 86,808 | $106.8K | 0.02% | −148,697−63.1% | Reduced |
| BlackRock, Inc. | 65,374 | $80.4K | 0.00% | +1,116+1.7% | Added |
| Squarepoint Ops LLC | 50,771 | $62.4K | 0.00% | +32,372+175.9% | Added |
| Bridgeway Capital Management, LLC | 50,500 | $62.1K | 0.00% | 00.0% | Unchanged |
| Walleye Capital LLC | 39,624 | $48.7K | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 29,081 | $35.8K | 0.00% | −10,983−27.4% | Reduced |
| Qube Research & Technologies Ltd | 18,047 | $22.2K | 0.00% | −3,495−16.2% | Reduced |
| State Street Corp | 15,962 | $19.6K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 15,501 | $19.1K | 0.00% | −1,238−7.4% | Reduced |
| Goldman Sachs Group Inc | 14,299 | $17.6K | 0.00% | −56,005−79.7% | Reduced |
| Acadian Asset Management LLC | 13,753 | $16.0K | 0.00% | 00.0% | Unchanged |
| Abel Hall, LLC | 12,925 | $15.9K | 0.01% | −1,474−10.2% | Reduced |
| Bank of America Corp | 7,739 | $9.52K | 0.00% | −36−0.5% | Reduced |
| Tower Research Capital LLC (TRC) | 2,593 | $3.19K | 0.00% | −3,479−57.3% | Reduced |
| BNP Paribas Arbitrage, SA | 349 | $429 | 0.00% | −1,621−82.3% | Reduced |
| Optiver Holding B.V. | 168 | $207 | 0.00% | +168 | New |
| Barclays PLC | 2 | $2 | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 1 | $1 | 0.00% | −12−92.3% | Reduced |
| CWM, LLC | 15 | $0 | 0.00% | −547−97.3% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −55,242−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −32,211−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −27,509−100.0% | Sold out |
| Wells Fargo & Company | 0 | $0 | 0.00% | −2,582−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −2,551−100.0% | Sold out |
| JPMorgan Chase & Co | 0 | $0 | 0.00% | −1,127−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −24−100.0% | Sold out |
| EverSource Wealth Advisors, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Royal Bank of Canada | 0 | $0 | 0.00% | −97−100.0% | Sold out |