BOUNDLESS BIO INC BOLD
COM · Common Stock · CUSIP 10170A100
Company in San Diego, United States
- SectorHealth care
- IndustryPharmaceutical Preparations
- HeadquartersLa Jolla, CA
- Founded2018
- Websiteboundlessbio.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $1.01.
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q1 2024 | 44 |
| Q2 2024 | 48 |
| Q3 2024 | 56 |
| Q4 2024 | 56 |
| Q1 2025 | 55 |
| Q2 2025 | 45 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q2 2024 | 32 | 23 |
| Q3 2024 | 21 | 20 |
| Q4 2024 | 36 | 13 |
| Q1 2025 | 19 | 21 |
| Q2 2025 | 18 | 40 |
Biggest buyers
| MILLENNIUM MANAGEMENT LLC | New | +213.6k |
| RBF Capital, LLC | New | +200.0k |
| RENAISSANCE TECHNOLOGIES LLC | Added | +106.6k |
| Stonepine Capital Management, LLC | New | +106.2k |
| Y-Intercept (Hong Kong) Ltd | New | +55.2k |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | New | +50.5k |
| GOLDMAN SACHS GROUP INC | Added | +35.9k |
| HRT FINANCIAL LP | New | +27.5k |
| Qube Research & Technologies Ltd | New | +21.5k |
| Squarepoint Ops LLC | New | +18.4k |
Biggest sellers
| Nuveen, LLC | Sold out | -4.0m |
| RA CAPITAL MANAGEMENT, L.P. | Sold out | -2.2m |
| BlackRock, Inc. | Reduced | -563.9k |
| Boxer Capital Management, LLC | Sold out | -250.0k |
| PFM Health Sciences, LP | Sold out | -240.5k |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | -188.2k |
| Redmile Group, LLC | Reduced | -136.2k |
| NORTHERN TRUST CORP | Reduced | -107.9k |
| VANGUARD GROUP INC | Reduced | -105.2k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Sold out | -40.5k |
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| FMR LLC 13G · institution filed 2026-02-05 | 12.0% |
| TANG CAPITAL MANAGEMENT LLC 13G · passive investor new · filed 2026-06-29 | 11.3% |
| Hornby Zachary 13G · passive investor new · filed 2026-08-27 | 9.8% |
| ADAR1 Capital Management, LLC 13G · institution new · filed 2026-08-14 | 8.8% |
Fell to 5% or below in the last year: CITADEL ADVISORS LLC (0.6%, 2026-08-14), Nextech VI GP S.A.R.L. (0.0%, 2026-02-17)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 0 | — | — |
| Q1 2024 | 0 | — | 0 | — | — |
| Q2 2024 | 1 | $3.2m | 0 | — | — |
| Q3 2024 | 0 | — | 0 | — | — |
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 0 | — | — |
None reported in Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| FMR LLC 0.00% of their portfolio | 3.1m $3.2m | Reduced -32.7k |
| Nextech Invest Ltd. 0.23% of their portfolio | 1.2m $1.2m | Unchanged |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 830.9k $839.2k | Unchanged |
| SECTORAL ASSET MANAGEMENT INC 0.45% of their portfolio | 678.6k $685.4k | Unchanged |
| Redmile Group, LLC 0.06% of their portfolio | 589.0k $594.9k | Reduced -136.2k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 556.2k $561.8k | Unchanged |
| VANGUARD GROUP INC 0.00% of their portfolio | 481.3k $486.1k | Reduced -105.2k |
| Alyeska Investment Group, L.P. 0.00% of their portfolio | 300.0k $303.0k | Unchanged |
| Almitas Capital LLC 0.06% of their portfolio | 235.5k $237.9k | Added +1.1k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 213.6k $215.7k | New |
| NORTHERN TRUST CORP 0.00% of their portfolio | 207.5k $209.6k | Reduced -107.9k |
| RBF Capital, LLC 0.01% of their portfolio | 200.0k $202.0k | New |
| Ensign Peak Advisors, Inc 0.00% of their portfolio | 187.5k $189.4k | Unchanged |
| Sio Capital Management, LLC 0.07% of their portfolio | 163.7k $165.3k | Added +1.6k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 121.0k $122.2k | Added +106.6k |
| Stonepine Capital Management, LLC 0.11% of their portfolio | 106.2k $107.2k | New |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 70.3k $71.0k | Added +35.9k |
| BlackRock, Inc. 0.00% of their portfolio | 64.3k $64.9k | Reduced -563.9k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 58.9k $59.5k | Reduced -188.2k |
| Y-Intercept (Hong Kong) Ltd 0.00% of their portfolio | 55.2k $55.8k | New |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 50.5k $51.0k | New |
| XTX Topco Ltd 0.00% of their portfolio | 40.1k $40.5k | Added +14.1k |
| Walleye Capital LLC 0.00% of their portfolio | 39.6k $40.0k | Unchanged |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 32.2k $32.5k | Added +9.0k |
| HRT FINANCIAL LP 0.00% of their portfolio | 27.5k $27.0k | New |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 21.5k $21.8k | New |
| Squarepoint Ops LLC 0.00% of their portfolio | 18.4k $18.6k | New |
| MORGAN STANLEY 0.00% of their portfolio | 16.7k $16.9k | Reduced -19.4k |
| STATE STREET CORP 0.00% of their portfolio | 16.0k $16.1k | Reduced -32.2k |
| Abel Hall, LLC 0.01% of their portfolio | 14.4k $14.5k | New |
| ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio | 13.8k $13.0k | Reduced -8.3k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 7.8k $7.9k | Reduced -7.5k |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 6.1k $6.1k | Reduced -346 |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 2.6k $2.6k | Reduced -6.3k |
| CITIGROUP INC 0.00% of their portfolio | 2.6k $2.6k | Reduced -9.3k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 2.0k $2.0k | Reduced -16.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.1k $1.1k | Reduced -18.1k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 1.0k $1.0k | New |
| CWM, LLC 0.00% of their portfolio | 562 $1.0k | Added +132 |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 194 $0 | Reduced -668 |
| Clearstead Advisors, LLC 0.00% of their portfolio | 24 $25 | New |
| UBS Group AG 0.00% of their portfolio | 13 $13 | Reduced -7.6k |
| BARCLAYS PLC 0.00% of their portfolio | 2 $2 | Reduced -17.9k |
| EverSource Wealth Advisors, LLC 0.00% of their portfolio | 2 $2 | Reduced -1 |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. — of their portfolio | 0 $0 | Unchanged |