Boundless Bio, Inc.
BOLD- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001782303
In the last 90 days, Boundless Bio, Inc. insiders filed 4 open-market purchases and 1 sale; 40 institutions reported holding it in 13F filings for Q2 2026, worth $38.3M in total; no superinvestor holds it.
Q1 2026 vs. Q4 2025
How the institutions holding Boundless Bio, Inc. changed between Q4 2025 and Q1 2026.
All holders in Q1 2026All holders in Q4 2025
| Measure | Q4 2025 | Of which not filed for Q1 2026 | Q1 2026 | Change |
|---|---|---|---|---|
| Holders | 36 | 1 | 36 | +1 |
| Shares | 8.78M | 662.8K | 8.49M | +367.6K (+4.5%) |
| Value | $10.5M | $795.3K | $9.33M | −$407.7K (−4.2%) |
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.
New holders (7)
Institutions that held Boundless Bio, Inc. at the end of Q1 2026 but not at the end of Q4 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Vanguard Capital Management LLC | 597,192 | $656.9K | 0.00% |
| Vanguard Fiduciary Trust Co | 65,136 | $71.7K | 0.00% |
| Squarepoint Ops LLC | 16,374 | $18.0K | 0.00% |
| Pure Financial Advisors, Inc. | 10,100 | $11.1K | 0.00% |
| Vanguard Global Advisers, LLC | 429 | $472 | 0.00% |
| Caitong International Asset Management Co., Ltd | 3 | $3 | 0.00% |
| SBI Securities Co., Ltd. | 1 | $1 | 0.00% |
Sold out (6)
Institutions that held Boundless Bio, Inc. at the end of Q4 2025 and filed for Q1 2026 without it.
| Institution | Shares, Q4 2025 | Value, Q4 2025 |
|---|---|---|
| Northern Trust Corp | 189,475 | $227.4K |
| Jane Street Group, LLC | 13,323 | $16.0K |
| Abel Hall, LLC | 12,865 | $15.4K |
| Nolet Wealth Management, LLC | 11,323 | $13.6K |
| Bank of America Corp | 7,758 | $9.31K |
| Barclays PLC | 2 | $2 |
Not filed for Q1 2026 yet (1)
Institutions that held Boundless Bio, Inc. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q4 2025 | Value, Q4 2025 |
|---|---|---|
| Vanguard Group Inc | 662,757 | $795.3K |