NASDAQ

BLLN

BillionToOne, Inc. Class A

☾After Hours +0.46 (+0.40%)Nov 4, 7:59 PM ET

At close $113.67 · +3.22 (+2.91%)

Mkt Cap
$5.4B
Volume
521.8K
52W High
$150.44
52W Low
$61.96
PE Ratio
178.4
Avg Vol
519.7K
As of 11/3/26
Div Yield
—
Beta
1.65
As of 11/3/26

Company

Headquarters
Menlo Park, CA
Employees
713 (2026)
Listed
Nov 6, 2025
Exchange
Nasdaq
SEC industry
Services-Medical Laboratories

Diagnostics

  • Market cap #10 of 39
  • P/B #6 of 37

Ranked highest first among stocks Cylvex covers.

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  4. DGXQuest Diagnostics Inc.$28.21B+3.46%
  5. GHGuardant Health, Inc.$22.65B-3.54%
All Diagnostics ›

Financial summary

Related companies

About

BillionToOne Inc is a molecular diagnostics company. It offers a portfolio of ultrasensitive tests covering prenatal genetic testing, cancer therapy selection, and response monitoring, which are based on its Quantitative Counting Templates (QCT) molecular counting platform. The company's product portfolio comprises UNITY, a portfolio of prenatal testing products that can conduct fetal risk analysis without requiring a paternal sample; Northstar Select, a ultrasensitive liquid biopsy test that provides insights into appropriate therapies for stage III or IV cancer patients; and Northstar Response, a tissue-free, pan-cancer, liquid biopsy test that measures several genomic loci uniquely methylated in cancer to provide insight into dynamic changes in therapy response.

From company filings and market data · Not investment advice

Price data

Day Low $108.82Day High $114.79
52W Low $61.9652W High $150.44
Open
$113.86
Prev Close
$110.45
Volume
521.8K
Avg Vol (30D)
523.8K

From daily bars

Financials

Consensus estimates

The information provided is for educational purposes only and does not constitute investment advice. Past performance does not guarantee future results.