BillionToOne, Inc.
BLLN- Exchange
- Nasdaq
- Industry
- Services-Medical Laboratories
- SEC CIK
- 0002070849
In the last 90 days, BillionToOne, Inc. insiders filed 0 open-market purchases and 22 sales; 155 institutions reported holding it in 13F filings for Q2 2026, worth $1.82B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in BillionToOne, Inc. as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 90
- +2 vs. Q4 2025
- Shares held
- 11.3M
- +2.05M (+22.1%) vs. Q4 2025
- Total value
- $875.1M
- +$115.0M (+15.1%) vs. Q4 2025
- New holders
- 29
- 32 more added
- Sold out
- 27
- 15 more reduced
2 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting BLLN on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 155 | $1.82B |
| Q1 2026 | 90 | $875.1M |
| Q4 2025 | 90 | $789.7M |
| Q3 2025 | 0 | $0 |
| Q2 2025 | 0 | $0 |
| Q1 2025 | 0 | $0 |
| Q4 2024 | 0 | $0 |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding BillionToOne, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ghisallo Capital Management LLC | 0 | $0 | 0.00% | −7,000−100.0% | Sold out |
| FNY Investment Advisers, LLC | 0 | $0 | 0.00% | −6,080−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −5,829−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −5,706−100.0% | Sold out |
| Sigma Planning Corp | 0 | $0 | 0.00% | −5,000−100.0% | Sold out |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −4,242−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −2,813−100.0% | Sold out |
| Nano Cap New Millennium Growth Fund L P | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −700−100.0% | Sold out |
| Parallel Advisors, LLC | 0 | $0 | 0.00% | −255−100.0% | Sold out |
| Legal & General Group Plc | 0 | $0 | 0.00% | −184−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −83−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −71−100.0% | Sold out |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −36−100.0% | Sold out |
| Bell Investment Advisors, Inc | 0 | $0 | 0.00% | −29−100.0% | Sold out |
| GAMMA Investing LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| DV Trading LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Norges Bank | – | – | – | – | Not filed |