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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ARCH Venture Management, LLC | History | No change | 2,694,095 | 6,735 | 0.61% | 0.61% | 1 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| FMR LLC | History | No change | 2,581,055 | 6,452 | 0.0% | 0.0% | 2 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| TANG CAPITAL MANAGEMENT LLC | History | No change | 2,559,875 | 6,399 | 0.29% | 0.29% | 3 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| ADAR1 Capital Management, LLC | History | No change | 1,968,216 | 4,920 | 0.23% | 0.23% | 4 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Cormorant Asset Management, LP | History | No change | 1,000,000 | 2,500 | 0.13% | 0.13% | 5 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | History | No change | 614,923 | 1,537 | 0.0% | 0.0% | 6 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | History | No change | 556,233 | 1,390 | 0.0% | 0.0% | 7 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | No change | 478,639 | 1,196 | 0.0% | 0.0% | 8 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | No change | 471,570 | 1,178 | 0.0% | 0.0% | 9 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| Alyeska Investment Group, L.P. | History | No change | 300,000 | 750 | 0.0% | 0.0% | 10 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Affinity Asset Advisors, LLC | History | No change | 250,000 | 625 | 0.03% | 0.03% | 11 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| China Universal Asset Management Co., Ltd. | History | Added to | 233,300 | 597 | 0.03% | 0.0% | 12 | +216,400 | 1280.47% | Q3 2026 | Oct 27, 2026 |
| RBF Capital, LLC | History | No change | 200,000 | 500 | 0.02% | 0.02% | 13 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Ensign Peak Advisors, Inc | History | No change | 159,835 | 399 | 0.0% | 0.0% | 14 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Stonepine Capital Management, LLC | History | No change | 154,595 | 386 | 0.22% | 0.22% | 15 | 0 | 0.0% | Q2 2026 | Aug 17, 2026 |
| ACADIAN ASSET MANAGEMENT LLC | History | No change | 146,757 | 365 | 0.0% | 0.0% | 16 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| CITADEL ADVISORS LLC | History | No change | 145,049 | 362 | 0.0% | 0.0% | 17 | 0 | 0.0% | Q2 2026 | Sep 02, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 129,672 | 325 | 0.0% | 0.0% | 18 | +12,936 | 11.08% | Q3 2026 | Nov 06, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | No change | 128,000 | 320 | 0.01% | 0.01% | 19 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| HRT FINANCIAL LP | History | No change | 116,288 | 290 | 0.0% | 0.0% | 20 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| BlackRock, Inc. | History | No change | 88,495 | 221 | 0.0% | 0.0% | 21 | 0 | 0.0% | Q2 2026 | Aug 07, 2026 |
| PRELUDE CAPITAL MANAGEMENT, LLC | History | No change | 83,998 | 209 | 0.02% | 0.02% | 22 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Rangeley Capital, LLC | History | No change | 74,000 | 185 | 0.17% | 0.17% | 23 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| GSA CAPITAL PARTNERS LLP | History | No change | 72,353 | 181 | 0.01% | 0.01% | 24 | 0 | 0.0% | Q2 2026 | Aug 06, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | No change | 65,136 | 162 | 0.0% | 0.0% | 25 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| JANE STREET GROUP, LLC | History | No change | 64,323 | 160 | 0.0% | 0.0% | 26 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| SUPERSTRING CAPITAL MANAGEMENT LP | History | No change | 55,356 | 138 | 0.09% | 0.09% | 27 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| NORTHERN TRUST CORP | History | No change | 34,824 | 87 | 0.0% | 0.0% | 28 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| XTX Topco Ltd | History | No change | 33,361 | 83 | 0.0% | 0.0% | 29 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Qube Research & Technologies Ltd | History | No change | 20,207 | 50 | 0.0% | 0.0% | 30 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| STATE STREET CORP | History | No change | 15,962 | 39 | 0.0% | 0.0% | 31 | 0 | 0.0% | Q2 2026 | Sep 22, 2026 |
| MORGAN STANLEY | History | No change | 13,000 | 32 | 0.0% | 0.0% | 32 | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| Pure Financial Advisors, LLC | History | No change | 10,100 | 25 | 0.0% | 0.0% | 33 | 0 | 0.0% | Q2 2026 | Aug 14, 2026 |
| Caitong International Asset Management Co., Ltd | History | Reduced | 8,170 | 20 | 0.0% | 0.0% | 34 | -2,273 | -21.77% | Q3 2026 | Oct 29, 2026 |
| Financial Management Professionals, Inc. | History | Closed out | 0 | 0 | — | — | — | -2 | -100.0% | Q3 2026 | Oct 23, 2026 |
| JPMORGAN CHASE & CO | History | No change | 179 | 0 | — | — | — | 0 | 0.0% | Q2 2026 | Aug 12, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | No change | 176 | 0 | — | — | — | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| Tower Research Capital LLC (TRC) | History | No change | 348 | 0 | — | — | — | 0 | 0.0% | Q2 2026 | Aug 11, 2026 |
| UBS Group AG | History | No change | 2 | 0 | — | — | — | 0 | 0.0% | Q2 2026 | Aug 13, 2026 |
| SBI Securities Co., Ltd. | History | No change | 2 | 0 | — | — | — | 0 | 0.0% | Q3 2026 | Oct 21, 2026 |