Boundless Bio, Inc. - BOLD
Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 1 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| FMR LLC | History | Reduced | 2,684,022 | 3,220 | 0.0% | 0.0% | 1 | -414,049 | -13.36% | Q4 2025 | Feb 17, 2026 |
| CITADEL ADVISORS LLC | History | Added to | 1,353,904 | 1,624 | 0.0% | 0.0% | 2 | +477,492 | 54.48% | Q4 2025 | Feb 17, 2026 |
| Stonepine Capital Management, LLC | History | Added to | 710,071 | 852 | 0.62% | 0.41% | 3 | +296,618 | 71.74% | Q4 2025 | Feb 13, 2026 |
| SECTORAL ASSET MANAGEMENT INC | History | No change | 678,574 | 814 | 0.65% | 0.51% | 4 | 0 | 0.0% | Q4 2025 | Feb 09, 2026 |
| VANGUARD GROUP INC | History | Added to | 662,757 | 795 | 0.0% | 0.0% | 5 | +93,100 | 16.34% | Q4 2025 | Jan 29, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | History | No change | 556,233 | 667 | 0.0% | 0.0% | 6 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Added to | 341,400 | 409 | 0.0% | 0.0% | 7 | +117,838 | 52.71% | Q4 2025 | Feb 12, 2026 |
| Alyeska Investment Group, L.P. | History | No change | 300,000 | 360 | 0.0% | 0.0% | 8 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| RBF Capital, LLC | History | No change | 200,000 | 240 | 0.01% | 0.01% | 9 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| NORTHERN TRUST CORP | History | Reduced | 189,475 | 227 | 0.0% | 0.0% | 10 | -1,326 | -0.69% | Q4 2025 | Feb 17, 2026 |
| Ensign Peak Advisors, Inc | History | No change | 187,500 | 225 | 0.0% | 0.0% | 11 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| Sio Capital Management, LLC | History | No change | 163,679 | 196 | 0.03% | 0.05% | 12 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Reduced | 135,410 | 162 | 0.0% | 0.0% | 13 | -28,681 | -17.48% | Q4 2025 | Feb 17, 2026 |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. | History | New | 127,626 | 153 | 0.01% | — | 14 | +127,626 | New | Q4 2025 | Feb 13, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Reduced | 94,098 | 112 | 0.0% | 0.0% | 15 | -8,170 | -7.99% | Q4 2025 | Feb 09, 2026 |
| BlackRock, Inc. | History | Added to | 67,048 | 80 | 0.0% | 0.0% | 16 | +1,674 | 2.56% | Q4 2025 | Feb 12, 2026 |
| GSA CAPITAL PARTNERS LLP | History | New | 62,476 | 75 | 0.01% | — | 17 | +62,476 | New | Q4 2025 | Feb 06, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | No change | 50,500 | 60 | 0.0% | 0.0% | 18 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| XTX Topco Ltd | History | Added to | 39,577 | 47 | 0.0% | 0.0% | 20 | +10,496 | 36.09% | Q4 2025 | Feb 17, 2026 |
| Walleye Capital LLC | History | No change | 39,624 | 47 | 0.0% | 0.0% | 19 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| CITIGROUP INC | History | New | 25,073 | 30 | 0.0% | — | 21 | +25,073 | New | Q4 2025 | Feb 13, 2026 |
| Qube Research & Technologies Ltd | History | Added to | 18,707 | 22 | 0.0% | 0.0% | 22 | +660 | 3.66% | Q4 2025 | Feb 17, 2026 |
| STATE STREET CORP | History | No change | 15,962 | 19 | 0.0% | 0.0% | 23 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| JANE STREET GROUP, LLC | History | New | 13,323 | 15 | 0.0% | — | 25 | +13,323 | New | Q4 2025 | Feb 12, 2026 |
| MORGAN STANLEY | History | Reduced | 13,000 | 15 | 0.0% | 0.0% | 24 | -2,501 | -16.13% | Q4 2025 | Feb 13, 2026 |
| Abel Hall, LLC | History | Reduced | 12,865 | 15 | 0.0% | 0.01% | 26 | -60 | -0.46% | Q4 2025 | Feb 17, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | History | Reduced | 12,610 | 14 | 0.0% | 0.0% | 27 | -1,143 | -8.31% | Q4 2025 | Feb 10, 2026 |
| Nolet Wealth Management, LLC | History | New | 11,323 | 13 | 0.01% | — | 28 | +11,323 | New | Q4 2025 | Feb 27, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Added to | 7,758 | 9 | 0.0% | 0.0% | 29 | +19 | 0.25% | Q4 2025 | Feb 17, 2026 |
| Tower Research Capital LLC (TRC) | History | Added to | 5,803 | 6 | 0.0% | 0.0% | 30 | +3,210 | 123.79% | Q4 2025 | Feb 17, 2026 |
| Nextech Invest, Ltd. | History | Closed out | 0 | 0 | — | 0.23% | — | -1,228,069 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Redmile Group, LLC | History | Closed out | 0 | 0 | — | 0.03% | — | -245,458 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Almitas Capital LLC | History | Closed out | 0 | 0 | — | 0.02% | — | -86,808 | -100.0% | Q3 2025 | Nov 17, 2025 |
| Squarepoint Ops LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -50,771 | -100.0% | Q3 2025 | Nov 14, 2025 |
| GOLDMAN SACHS GROUP INC | History | Closed out | 0 | 0 | — | 0.0% | — | -14,299 | -100.0% | Q3 2025 | Nov 14, 2025 |
| BNP PARIBAS FINANCIAL MARKETS | History | Reduced | 176 | 0 | — | — | — | -173 | -49.57% | Q4 2025 | Feb 10, 2026 |
| JPMORGAN CHASE & CO | History | New | 169 | 0 | — | — | — | +169 | New | Q4 2025 | Feb 11, 2026 |
| UBS Group AG | History | Added to | 23 | 0 | — | — | — | +22 | 2200.0% | Q4 2025 | Jan 29, 2026 |
| CWM, LLC | History | Reduced | 9 | 0 | — | — | — | -6 | -40.0% | Q4 2025 | Jan 26, 2026 |
| BARCLAYS PLC | History | No change | 2 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Optiver Holding B.V. | History | No change | 168 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |