Adicon Holdings Ltd. raised HK$409 million (US$52 million) in an initial public offering on the Hong Kong stock market. Its shares opened at HK$12.32, jumped 12% and closed at HK$13.8 on the first trading day. Hangzhou, China-based Adicon is among the top three independent clinical laboratory (ICL) service providers in China by total revenues. It offers testing services to hospitals and health check centres through a network of 33 self-operated laboratories across China.