Boundless Bio, Inc. - BOLD
Detailed investor-level table based on 13F positions.
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 | Added to | 2,695,455 | 2,965 | 0.0% | 0.0% | 1 | +11,433 | 0.43% | Q1 2026 | May 15, 2026 |
| CITADEL ADVISORS LLC | History | Reduced | 1,342,131 | 1,476 | 0.0% | 0.0% | 2 | -11,773 | -0.87% | Q1 2026 | May 15, 2026 |
| VANGUARD GROUP INC | History | No change | 662,757 | 795 | 0.0% | 0.0% | 3 | 0 | 0.0% | Q4 2025 | Jan 29, 2026 |
| SECTORAL ASSET MANAGEMENT INC | History | No change | 678,574 | 746 | 0.62% | 0.65% | 4 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Stonepine Capital Management, LLC | History | Reduced | 597,682 | 657 | 0.26% | 0.62% | 5 | -112,389 | -15.83% | Q1 2026 | May 14, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | History | New | 597,192 | 656 | 0.0% | — | 6 | +597,192 | New | Q1 2026 | May 15, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | History | No change | 556,233 | 611 | 0.0% | 0.0% | 7 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Added to | 399,000 | 438 | 0.0% | 0.0% | 8 | +57,600 | 16.87% | Q1 2026 | May 14, 2026 |
| Alyeska Investment Group, L.P. | History | No change | 300,000 | 330 | 0.0% | 0.0% | 9 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| RBF Capital, LLC | History | No change | 200,000 | 220 | 0.01% | 0.01% | 10 | 0 | 0.0% | Q1 2026 | May 18, 2026 |
| Ensign Peak Advisors, Inc | History | No change | 187,500 | 206 | 0.0% | 0.0% | 11 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| Sio Capital Management, LLC | History | No change | 163,679 | 180 | 0.03% | 0.03% | 12 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 127,576 | 140 | 0.0% | 0.0% | 13 | +33,478 | 35.58% | Q1 2026 | May 15, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Reduced | 99,875 | 109 | 0.0% | 0.0% | 14 | -35,535 | -26.24% | Q1 2026 | May 15, 2026 |
| GSA CAPITAL PARTNERS LLP | History | Added to | 96,824 | 107 | 0.01% | 0.01% | 15 | +34,348 | 54.98% | Q1 2026 | May 08, 2026 |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. | History | Reduced | 85,792 | 94 | 0.01% | 0.01% | 16 | -41,834 | -32.78% | Q1 2026 | May 12, 2026 |
| BlackRock, Inc. | History | Added to | 70,675 | 77 | 0.0% | 0.0% | 17 | +3,627 | 5.41% | Q1 2026 | May 13, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | New | 65,136 | 71 | 0.0% | — | 18 | +65,136 | New | Q1 2026 | May 08, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | No change | 50,500 | 55 | 0.0% | 0.0% | 19 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Walleye Capital LLC | History | No change | 39,624 | 43 | 0.0% | 0.0% | 20 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| XTX Topco Ltd | History | Reduced | 34,671 | 38 | 0.0% | 0.0% | 21 | -4,906 | -12.4% | Q1 2026 | May 15, 2026 |
| Qube Research & Technologies Ltd | History | Reduced | 17,492 | 19 | 0.0% | 0.0% | 22 | -1,215 | -6.49% | Q1 2026 | May 15, 2026 |
| Squarepoint Ops LLC | History | New | 16,374 | 18 | 0.0% | — | 23 | +16,374 | New | Q1 2026 | May 15, 2026 |
| STATE STREET CORP | History | No change | 15,962 | 17 | 0.0% | 0.0% | 24 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| MORGAN STANLEY | History | No change | 13,000 | 14 | 0.0% | 0.0% | 25 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | History | No change | 12,610 | 12 | 0.0% | 0.0% | 26 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| Pure Financial Advisors, LLC | History | New | 10,100 | 11 | 0.0% | — | 27 | +10,100 | New | Q1 2026 | Apr 10, 2026 |
| CITIGROUP INC | History | Reduced | 8,837 | 9 | 0.0% | 0.0% | 28 | -16,236 | -64.75% | Q1 2026 | May 11, 2026 |
| Tower Research Capital LLC (TRC) | History | Reduced | 2,371 | 2 | 0.0% | 0.0% | 29 | -3,432 | -59.14% | Q1 2026 | May 15, 2026 |
| NORTHERN TRUST CORP | History | Closed out | 0 | 0 | — | 0.0% | — | -189,475 | -100.0% | Q1 2026 | May 14, 2026 |
| JANE STREET GROUP, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -13,323 | -100.0% | Q1 2026 | May 12, 2026 |
| Abel Hall, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -12,865 | -100.0% | Q1 2026 | Apr 28, 2026 |
| Nolet Wealth Management, LLC | History | Closed out | 0 | 0 | — | 0.01% | — | -11,323 | -100.0% | Q1 2026 | May 05, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Closed out | 0 | 0 | — | 0.0% | — | -7,758 | -100.0% | Q1 2026 | May 15, 2026 |
| Vanguard Global Advisers, LLC | History | New | 429 | 0 | — | — | — | +429 | New | Q1 2026 | May 08, 2026 |
| UBS Group AG | History | Reduced | 2 | 0 | — | — | — | -21 | -91.3% | Q1 2026 | May 05, 2026 |
| Caitong International Asset Management Co., Ltd | History | New | 3 | 0 | — | — | — | +3 | New | Q1 2026 | May 11, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Added to | 178 | 0 | — | — | — | +2 | 1.14% | Q1 2026 | May 12, 2026 |
| BARCLAYS PLC | History | Closed out | 0 | 0 | — | — | — | -2 | -100.0% | Q1 2026 | May 14, 2026 |
| CWM, LLC | History | Reduced | 8 | 0 | — | — | — | -1 | -11.11% | Q1 2026 | May 14, 2026 |
| SBI Securities Co., Ltd. | History | New | 1 | 0 | — | — | — | +1 | New | Q1 2026 | Apr 27, 2026 |
| JPMORGAN CHASE & CO | History | No change | 169 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| Optiver Holding B.V. | History | No change | 168 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Jun 02, 2026 |