Boundless Bio, Inc.
BOLD- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001782303
In the last 90 days, Boundless Bio, Inc. insiders filed 5 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, Q4 2025
Institutional positions in Boundless Bio, Inc. as of Dec 31, 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
- 36
- +1 vs. Q3 2025
- Shares held
- 8.78M
- −840.4K (−8.7%) vs. Q3 2025
- Total value
- $10.5M
- −$1.30M (−11.0%) vs. Q3 2025
- New holders
- 6
- 10 more added
- Sold out
- 5
- 9 more reduced
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Boundless Bio, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| CWM, LLC | 9 | $0 | 0.00% | −6−40.0% | Reduced |
| Barclays PLC | 2 | $2 | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 23 | $27 | 0.00% | +22+2,200.0% | Added |
| Optiver Holding B.V. | 168 | $202 | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 169 | $203 | 0.00% | +169 | New |
| BNP Paribas Arbitrage, SA | 176 | $211 | 0.00% | −173−49.6% | Reduced |
| Tower Research Capital LLC (TRC) | 5,803 | $6.96K | 0.00% | +3,210+123.8% | Added |
| Bank of America Corp | 7,758 | $9.31K | 0.00% | +19+0.2% | Added |
| Nolet Wealth Management, LLC | 11,323 | $13.6K | 0.01% | +11,323 | New |
| Acadian Asset Management LLC | 12,610 | $14.0K | 0.00% | −1,143−8.3% | Reduced |
| Abel Hall, LLC | 12,865 | $15.4K | 0.00% | −60−0.5% | Reduced |
| Morgan Stanley | 13,000 | $15.6K | 0.00% | −2,501−16.1% | Reduced |
| Jane Street Group, LLC | 13,323 | $16.0K | 0.00% | +13,323 | New |
| State Street Corp | 15,962 | $19.2K | 0.00% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 18,707 | $22.4K | 0.00% | +660+3.7% | Added |
| Citigroup Inc | 25,073 | $30.1K | 0.00% | +25,073 | New |
| XTX Topco Ltd | 39,577 | $47.5K | 0.00% | +10,496+36.1% | Added |
| Walleye Capital LLC | 39,624 | $47.5K | 0.00% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 50,500 | $60.6K | 0.00% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 62,476 | $75.0K | 0.01% | +62,476 | New |
| BlackRock, Inc. | 67,048 | $80.5K | 0.00% | +1,674+2.6% | Added |
| Geode Capital Management, LLC | 94,098 | $112.9K | 0.00% | −8,170−8.0% | Reduced |
| Landscape Capital Management, L.L.C. | 127,626 | $153.2K | 0.01% | +127,626 | New |
| Millennium Management LLC | 135,410 | $162.5K | 0.00% | −28,681−17.5% | Reduced |
| Sio Capital Management, LLC | 163,679 | $196.4K | 0.03% | 00.0% | Unchanged |
| Ensign Peak Advisors, Inc | 187,500 | $225.0K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 189,475 | $227.4K | 0.00% | −1,326−0.7% | Reduced |
| RBF Capital, LLC | 200,000 | $240.0K | 0.01% | 00.0% | Unchanged |
| Alyeska Investment Group, L.P. | 300,000 | $360.0K | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 341,400 | $409.7K | 0.00% | +117,838+52.7% | Added |
| Wellington Management Group LLP | 556,233 | $667.5K | 0.00% | 00.0% | Unchanged |
| Vanguard Group Inc | 662,757 | $795.3K | 0.00% | +93,100+16.3% | Added |
| Sectoral Asset Management Inc | 678,574 | $814.3K | 0.65% | 00.0% | Unchanged |
| Stonepine Capital Management, LLC | 710,071 | $852.1K | 0.67% | +296,618+71.7% | Added |
| Citadel Advisors LLC | 1,353,904 | $1.62M | 0.00% | +477,492+54.5% | Added |
| FMR LLC | 2,684,022 | $3.22M | 0.00% | −414,049−13.4% | Reduced |
| Nextech Invest, Ltd. | 0 | $0 | 0.00% | −1,228,069−100.0% | Sold out |
| Redmile Group, LLC | 0 | $0 | 0.00% | −245,458−100.0% | Sold out |
| Almitas Capital LLC | 0 | $0 | 0.00% | −86,808−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −50,771−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −14,299−100.0% | Sold out |