Metis Techbio Co. Ltd. is seeking a potential HK$2.11 billion (US$270 million) raise through a stock sale May 13, marking the largest biotech raise on the Hong Kong Stock Exchange this year to date. Hangzhou, China-based Metis is an AI-based nanoparticle drug formulation and delivery-focused company. Synthetic lethality-based cancer drugmaker Impact Therapeutics Inc., of Shanghai, plans to debut on the same day with a US$117 million IPO.