BillionToOne, Inc. (BLLN) ownership: Entities affiliated with Hummingbird Ventures 49% · institutions 21% · index and ETF funds 0% (13F 2026-03-31). Insider activity, 90 days: Routine (106 sales, 0 open-market buys). SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| Adams Street Partners LLC | 1711430.00 | $135.10M | 3.1% | 2026-03-31 |
| Baillie Gifford | 1259993.00 | $99.46M | 2.3% | 2026-03-31 |
| Civilization Ventures Management, LLC | 1099431.00 | $86.80M | 2.0% | 2026-03-31 |
| Bamco Inc | 741485.00 | $58.53M | 1.4% | 2026-03-31 |
| NVP Associates, LLC | 513330.00 | $40.52M | 0.9% | 2026-03-31 |
| Neuberger Berman | 709214.00 | $37.81M | 1.3% | 2026-03-31 |
| Invesco | 406512.00 | $32.09M | 0.7% | 2026-03-31 |
| Wasatch Advisors LP | 369638.00 | $29.18M | 0.7% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-10 | |
| Sell | null | 2026-08-10 | |
| Sell | null | 2026-08-10 | |
| Sell | null | 2026-08-10 | |
| Sell | null | 2026-08-05 | |
| Sell | null | 2026-08-05 | |
| Sell | null | 2026-08-05 | |
| Sell | null | 2026-08-03 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.