BillionToOne (BLLN)

Healthcare · Diagnostics & Research
$98.09 +2.81% on the day Market cap $4.3B 52-week range $61.96 to $150.44 Prices as of Oct 11, 2026

What the price implies

A reverse DCF: instead of guessing a fair value, it asks what growth today's price already assumes. How it works.

Free cash flow growth the price needs
41% a year for 10 years

At a market value of $4.3B, BillionToOne's free cash flow of $16M (fiscal 2025) would need to grow about 41% a year for the stock to be worth today's price.

Assumes a 9% discount rate and 3% growth after year 10, on free cash flow (operating cash flow minus capital spending) from BillionToOne's SEC filings. Change any assumption, or model revenue and margins instead, in the Modeling tab, or try your own numbers in the reverse DCF calculator.

Implied by the price40.7% a year
Free cash flow, last – years—
Revenue, same period106.2% a year
Price to free cash flow273.0x

Fundamental grade

C

Five factors scored 1 to 9 from BLLN's latest numbers, weighted into one grade. It describes the business, not whether the stock is a buy.

Valuation1
Profitability6
Growth9
Financial health8
Cash efficiency4

Results from SEC filings

Fiscal years, from BillionToOne's 10-K filings. Ten years of the full income statement, balance sheet and cash flow.

Fiscal year202320242025
Revenue$72M$153M$305M
Net income-$83M-$42M$7M
Free cash flow-$60M-$47M$16M
EPS (diluted)-$8.45-$4.12$0.14
Operating margin-96.9%-30.9%5.3%

Where the revenue comes from

Revenue by products, fiscal 2025. Every breakdown, year by year.

Prenatal$277M91%
Oncology$25M8%
Clinical trial support and other services$3M1%

Superinvestors who own BLLN

From each investor's latest 13F filing (what a 13F shows). 2 of the investors we track hold it.

InvestorLast quarterValue% of portfolioQuarter
Ron Baron
Baron Capital (BAMCO)
Added $89M0.13%Q2 2026
Joel Greenblatt
Gotham Asset Management
New position $213,8040.0%Q2 2026

Insider buying

Open-market purchases by BillionToOne's executives and directors in the last 12 months, from SEC Form 4 filings. What insider buying tells you.

No open-market insider purchases of BLLN in the last 12 months. Most insider activity is selling and option exercises, which aren't shown here.

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In the full deep dive

DCF fair value per share
Yearly return (IRR) at today's price
Growth implied by revenue and margins
15+ years of statements and quarters

Questions

What growth does BillionToOne's stock price imply?

At a market value of $4.3B, BillionToOne would need its free cash flow to grow about 41% a year for 10 years (discounted at 9%, 3% growth after that) to be worth today's price.

Are BillionToOne insiders buying the stock?

No open-market insider purchases of BLLN in the last 12 months, according to SEC Form 4 filings.

Which superinvestors own BillionToOne?

2 of the superinvestors Investingly tracks hold BLLN in their latest 13F, including Ron Baron, Joel Greenblatt.

Prices and ratios as of Oct 11, 2026; statements from SEC filings. Information only, not investment advice. Superinvestor holdings come from 13F filings, which are filed up to 45 days after each quarter ends.