Core Viewpoint - Shares of BillionToOne (BLLN) have doubled on their opening day of trading, indicating strong investor optimism regarding the company's innovative technology for disease detection from a single drop of blood [1] Group 1: Company Overview - BillionToOne has developed a revolutionary technology aimed at detecting diseases, which has garnered significant attention from investors [1] Group 2: Market Reaction - The stock price of BillionToOne experienced a doubling on its first trading day, reflecting a positive market sentiment and high expectations for the company's future prospects [1]