BillionToOne Inc. Class A Common Stock (BLLN)

FairStock Score: 35/100 — MIXED

Key Financials

Strengths

• Generates $21 million in annual free cash flow (0.5% yield on market cap)
• Conservative balance sheet with debt-to-equity of just 0.23, providing financial flexibility
• Altman Z-Score of 15.9 confirms minimal bankruptcy risk and strong solvency
• Revenue growth of 113.1% demonstrates strong top-line momentum

Concerns

• Trades significantly above Graham Number ($6) with negative 1373% margin of safety—limited downside protection

AI Analysis

BillionToOne Inc. Class A Common Stock is a small-cap healthcare company valued at $3.9 billion. The business generates $305 million in annual revenue with a 1.4% net margin and $21 million in free cash flow. From a quality standpoint, BillionToOne shows solid Piotroski F-Score of 6/9 and Altman Z-Score of 15.9 confirms fortress-level solvency. On valuation, the stock is commanding a steep 599.5x multiple, with trades far above its Graham Number ($6) with no margin of safety. Growth dynamics show revenue growing at 113.1% and profit growth of 152.1%. Our composite FairStock Score of 35/100 reflects below-average fundamentals overall. Investors should weigh the business quality against the current price and their own margin of safety requirements.

Bull Case

BillionToOne's 113% revenue growth trajectory could accelerate as it captures additional market share in the healthcare sector. With $21 million in annual free cash flow (0.5% yield), management has ample capital for buybacks, dividends, or accretive acquisitions.

Bear Case

At 600x earnings, any growth disappointment triggers rapid multiple compression—a 20% earnings miss plus multiple contraction to 20x implies 40%+ downside. Regulatory changes, input cost inflation, or demand normalization represent underappreciated risks that could materially impact forward estimates.

Data from SEC filings. AI analysis is for educational purposes only — not investment advice. Scoring methodology · Disclaimer