When was BillionToOne founded?

BillionToOne was founded in 2015 and raised its 1st funding round 2 years after it was founded.

Where is BillionToOne located?

BillionToOne is headquartered in San Francisco, United States. It is registered at Menlo Park, California.

How many employees does BillionToOne have?

As of Mar 31, 2026, the latest employee count at BillionToOne is 731.

Is BillionToOne a funded company?

BillionToOne is a funded company, having raised a total of $389M across 10 funding rounds to date. The company's 1st funding round was a $120K Seed round, raised on 2017.

When was the latest funding round of BillionToOne?

BillionToOne's latest funding was a $130M Series D round on Jun 21, 2024, with participation from 8 investors.

Is BillionToOne a Genomics company?

The primary sectors of BillionToOne are Genomics, Women Health and Oncology.

Where does BillionToOne rank among its competitors?

BillionToOne ranks 8th amongst 530 active competitors, of which 163 are funded. It stands 4th in terms of total funding among its competitors.

Who are the top competitors of BillionToOne?

BillionToOne's top competitors include Guardant Health, GRAIL and Exact Sciences. Among them, BillionToOne secured the most recent funding round in June, 2024.

BillionToOne - 2026 Company Profile, Team, Funding & Competitors

Sectors and market segments that BillionToOne operate in

BillionToOne serves in the Life Sciences, Sustainability Tech market segments.The primary business model of BillionToOne are:

Company Details

Provider of cell-free cancer liquid biopsy test. The company provides a molecular counter platform to count the DNA molecules from blood samples. It provides genetic tests for cystic fibrosis, spinal muscular atrophy, sickle cell disease, etc.

Website: www.billiontoone.com/
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Registered Address: Menlo Park, California

Key Metrics

Founded Year

2015

Location

San Francisco, United States

Stage

Public

Total Funding

$389M in 10 rounds

Latest Funding Round

Series D, Jun 21, 2024, $130M

Investors

Hummingbird Ventures & 30 more

Ranked

8^th among 530 active competitors

Employee Count

731 as on Mar 31, 2026

Similar Companies

Guardant Health & 660 more

Exit Details

Public

View BillionToOne's full profile

BillionToOne is associated with 3 legal entities given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
Billiontoone, Inc. CIN: 811082020 , United States, Active	Dec 31, 1999	-	468 (As on Dec 31, 2024)	-
Billiontoone, Inc. CIN: 0018y00000BhtwJAAR , United States, Active	Apr 16, 2024	-	-	-
BillionToOne Inc CIN: 81-1082020 , United States, Active	Dec 31, 2014	-	47 (As on Dec 31, 2020)	-

BillionToOne got listed on Nov 06, 2025.

Click here to take a look at BillionToOne's IPO in detail

BillionToOne has raised a total funding of $389M over 10 rounds. Its first funding round was on 2017. Its latest funding round was a Series D round on Jun 21, 2024 for $130M. 8 investors participated in its latest round. BillionToOne has 31 institutional investors.

Here is the list of recent funding rounds of BillionToOne:

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Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Jun 21, 2024	$130M	Series D	-	-	Premji Invest	Neuberger Berman, Adams Street Partners, Baillie Gifford, Hummingbird Ventures, Civilization Ventures, Libertus Capital, Fifty Years
Dec 15, 2022	Undisclosed	Conventional Debt	-	-	-	Bridge Community Bank
Dec 15, 2022	$48.5M	Series C	-	-	Baillie Gifford, Adams Street Partners, Time BioVentures	Libertus Capital, Hummingbird Ventures, Neotribe, Fifty Years, Norwest

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View details of BillionToOne's funding rounds and investors

The founders of BillionToOne are David Tsao, Oguzhan Atay and Sukrit Silas. Oguzhan Atay is the CEO of BillionToOne.

Here are the details of BillionToOne's key team members:

David Tsao: Co-Founder & CTO of BillionToOne and founder of 1 other company. They are also an angel investor in 3 startups.
Oguzhan Atay: Co-Founder & CEO of BillionToOne and founder of 1 other company.
Sukrit Silas: Former Co-Founder of BillionToOne.

View details of BillionToOne's Founder profiles and Board Members

BillionToOne's employee count trend

BillionToOne has 731 employees as of Mar 26. Here is BillionToOne's employee count trend over the years:

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Top competitors of BillionToOne include Guardant Health, GRAIL and Exact Sciences. Here is the list of Top 10 competitors of BillionToOne, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Guardant Health 2012, Redwood City (United States), Public	Developer of digital sequencing technology for cancer detection	$557M	Orbimed, Sequoia Capital & 23 others	80/100
2nd	GRAIL 2016, Menlo Park (United States), Public	Developer of a screening platform for circulating tumor DNA to detect cancer	$3.22B	Arch Venture Partners, CPP Investments & 47 others	79/100
3rd	Exact Sciences 1995, Madison (United States), Public	Provider of non-invasive molecular diagnostic testing solutions for cancer	-	Great Point Partners, Bank of America & 8 others	73/100
4th	Foundation Medicine 2010, Cambridge (United States), Acquired	Provider of genomics-based diagnostics test for cancer	$96.5M	Roche, Deerfield & 11 others	70/100
5th	Caris Life Sciences 1996, Irving (United States), Public	Developer of panomic disease profiling technologies for cancer precision medicine	$1.23B	Sixth Street, Coatue & 19 others	70/100
6th	Natera 2004, Redwood City (United States), Public	Developer of cell-free DNA testing for oncology, women’s health, and organ health	$152M	HRC Fertility, Foresite Capital & 16 others	68/100
7th	Prenetics 2009, Hong Kong (China), Public	Online platform for genetic and diagnostic health testing that helps identify health risks	$67.6M	Beyond Ventures, Ping An Ventures & 17 others	68/100
8th	BillionToOne 2015, San Francisco (United States), Public	Provider of cell-free cancer liquid biopsy test	$389M	Adams Street Partners, Baillie Gifford & 29 others	69/100
9th	Novogene Corporation 2011, Beijing (China), Series B	Provider of genomic services and solutions	$75M	Sigma Square Capital, SDIC Innovation & 4 others	66/100
10th	Delfi Diagnostics 2019, Baltimore (United States), Series B	Provider of DNA sequencing for cancer detection	$332M	Orbimed, DFJ Growth & 17 others	65/100