
BillionToOne
IPOThe genetic testing platform detecting and measuring disease.
Public · Menlo Park, United States · Founded 2016 · $406.0M raised
- Headquarters
- Menlo Park, California
- Employees
- 201–500
- Founded
- 2016
- Business Model
- B2B
- Website
- billiontoone.com
- Total Funding
- $406.0M
- Last Round
- $15.0M Venture RoundMar 2026
- Rounds
- 8
- Type
- Public
About
BillionToOne has developed a DNA molecular counter that increases the cell-free DNA diagnostics resolution by over 1,000 fold, which unlocks transformative improvements in prenatal screening and liquid biopsy for cancers. Unity Screen, BillionToOne's commercially available non-invasive prenatal test (NIPT), is the only NIPT that can assess fetal risk for both recessive conditions and aneuploidies from maternal blood. UNITY Screen continues to grow exponentially and is on its path to becoming the next standard-of-care, with an increasing number of publications showing its accuracy and advantages over other screening methods. We have also recently used our molecular counting technology to develop liquid biopsy tests, which have the potential to completely transform oncology care.
Summary
BillionToOne is a Biotech company based in Menlo Park, United States, founded in 2016. It has raised $406.0M in total across 8 rounds, most recently a $15.0M Venture Round round in Mar 2026. Investors include Hummingbird Ventures, Adams Street Partners and Premji Invest.
Tech & App Stack
8 technologies & apps tracked
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Funding History
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Mar 2026
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Seed through Venture Round — per-round amounts, valuations, and who invested in each round.
Investors
Hummingbird Ventures
6 rounds
Adams Street Partners
3 rounds
Premji Invest
1 round

Y Combinator Continuity Fund
1 round
NeoTribe Ventures
5 rounds
Civilization Ventures
4 rounds
Fifty Years
4 rounds

Baillie Gifford
3 rounds
Libertus Capital
3 rounds

Norwest Venture Partners
3 rounds

Time BioVentures
2 rounds

HOF Capital
2 rounds
Neuberger Berman
1 round
Four Rivers Group
1 round
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