BillionToOne: Reaffirmed Growth Targets and Upside to 2026 Support Reiterated Buy Rating

William Blair analyst Andrew Brackmann has reiterated their bullish stance on BLLN stock, giving a Buy rating yesterday.

Andrew Brackmann has given his Buy rating due to a combination of factors that highlight BillionToOne’s strong growth outlook and solid execution. The company reaffirmed its 2025 revenue target at a level that implies continued expansion alongside achieving positive GAAP operating income, signaling a shift toward sustainable profitability. In addition, newly introduced 2026 revenue guidance came in notably above prior market expectations, suggesting management’s confidence in the durability of demand and the company’s ability to scale. Brackmann also points out that BillionToOne has historically tended to outperform its own targets, which adds further credibility and potential upside to the current outlook.

Andrew Brackmann’s rating is based on the view that BillionToOne offers an attractive long-term growth profile with a meaningful runway for both revenue and earnings expansion. He believes the company is well-positioned to maintain its current valuation multiple as it executes on this growth, particularly as upcoming milestones and operational catalysts unfold through 2026. While he acknowledges risks such as intense competition, uncertainties in oncology, reimbursement dynamics, and governance concerns related to the dual-class structure, he expects the positive fundamentals to outweigh these challenges. Taken together, these considerations support his decision to reiterate a Buy (Outperform) stance on the shares.

Brackmann covers the Healthcare sector, focusing on stocks such as BillionToOne, Inc. Class A, Exact Sciences, and Adaptive Biotechnologies. According to TipRanks, Brackmann has an average return of 35.6% and a 67.21% success rate on recommended stocks.

In another report released yesterday, TipRanks – Google also initiated coverage with a Buy rating on the stock with a $99.00 price target.