Latest Period
Q1 2026
Security Snapshot
BillionToOne, Inc. - Class A common stock, par value $0.00001 per share (BLLN) Institutional Ownership
CUSIP: 090168105
13F Institutional Holders and Ownership History from Q4 2025 to Q1 2026
Institutions Reporting
89
Shares (Excl. Options)
11,339,021
Price
$78.94
Save this security page for your next review
Keep this CUSIP in your watchlists so you can revisit quarter changes from one place. If you create an account from here, we will bring you back after verification.
- Security type / class
- Equity / Class A common stock, par value $0.00001 per share
- Symbol
- BLLN on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 11,339,021
- Total 13F value
- $875,090,591
- Portfolio coverage rank
- 0%
- Share change
- +1,679,535
- Value change
- +$131,775,443
- Number of holders
- 89
- Shares outstanding
- 43,996,623
- SEC-reported price per share
- $90.59
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- BLLN - BillionToOne, Inc. - Class A common stock, par value $0.00001 per share is tracked under CUSIP 090168105.
- 89 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 90 to 89 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $789,938,363 to $875,090,591.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 89 institutions filings for Q1 2026.
Security key
090168105
Latest holder period
Q1 2026
13F holders
89
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
BLLN full holder history
BillionToOne, Inc. SEC filings
BillionToOne, Inc. company facts
BillionToOne, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 090168105:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
BLLN
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Humming Bird Ventures Management NV | 20% | $645,491,476 | 7,887,237 | Hummingbird Ventures Management NV | 06 Nov 2025 | |||
| NeoTribe Ventures I, L.P. | 11% | $422,218,059 | 4,359,505 | Krishna Kittu Kolluri ("Kolluri") | 07 Nov 2025 | |||
| Atay Oguzhan | 7.3% | $310,584,488 | 3,206,861 | Oguzhan Atay | 31 Dec 2025 | |||
| Tsao David | 6.9% | $294,014,034 | 3,035,767 | David Tsao | 31 Dec 2025 |
As of 31 Mar 2026, 89 institutional investors reported holding 11,339,021 shares of BillionToOne, Inc. - Class A common stock, par value $0.00001 per share (BLLN). This represents 26% of the company’s total 43,996,623 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
23%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| ADAMS STREET PARTNERS LLC | 3.9% | 1,711,430 | 0% | 52% | $135,100,284 |
| BAILLIE GIFFORD & CO | 2.9% | 1,259,993 | -0.64% | 0.1% | $99,463,846 |
| Civilization Ventures Management, LLC | 2.5% | 1,099,431 | 0% | 99% | $86,798,083 |
| BAMCO INC /NY/ | 1.7% | 741,485 | +336% | 0.18% | $58,532,826 |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.7% | 737,518 | +52% | 0.01% | $58,221,000 |
| NEUBERGER BERMAN GROUP LLC | 1.6% | 709,214 | +1.2% | 0.03% | $37,813,064 |
| NVP ASSOCIATES, LLC | 1.2% | 513,330 | 0% | 23% | $40,522,270 |
| Invesco Ltd. | 0.92% | 406,512 | +114% | 0% | $32,090,057 |
| WASATCH ADVISORS LP | 0.84% | 369,638 | 0.19% | $29,179,224 | |
| JPMORGAN CHASE & CO | 0.64% | 283,140 | -28% | 0% | $19,850,946 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.55% | 240,587 | +5.7% | 0% | $18,991,938 |
| EMERALD ADVISERS, LLC | 0.54% | 239,562 | +27% | 0.6% | $18,911,024 |
| Napean Trading & Investment Co (Singapore) PTE Ltd | 0.53% | 233,333 | 0% | 7.9% | $18,419,307 |
| ALLIANCEBERNSTEIN L.P. | 0.51% | 223,251 | +7% | 0.01% | $18,270,862 |
| AMERIPRISE FINANCIAL INC | 0.5% | 220,035 | +80% | 0% | $17,369,563 |
| VANGUARD CAPITAL MANAGEMENT LLC | 0.41% | 182,463 | 0% | 0% | $14,403,629 |
| Capital International Investors | 0.4% | 178,000 | 0% | 0% | $14,051,320 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 0.36% | 159,573 | -2.3% | 0% | $12,596,693 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 0.34% | 151,213 | 0% | 0% | $11,936,754 |
| EMERALD MUTUAL FUND ADVISERS TRUST | 0.3% | 132,206 | +12% | 0.51% | $10,436,342 |
| Penn Capital Management Company, LLC | 0.29% | 126,335 | 0.77% | $9,992,024 | |
| UBS Group AG | 0.28% | 121,604 | +285% | 0% | $9,599,420 |
| BlackRock, Inc. | 0.22% | 95,160 | +33% | 0% | $7,511,930 |
| PERCEPTIVE ADVISORS LLC | 0.21% | 91,812 | +26% | 0.14% | $7,247,639 |
| NEXT CENTURY GROWTH INVESTORS LLC | 0.21% | 90,564 | +147% | 0.52% | $7,149,122 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
2
Latest
Q1 2026
Rows shown
1-2 of 2