Tweet China’s reported move raises questions over plans for a New York IPO of video app TikTok, owned by the Chinese company ByteDance. Photograph: Lionel Bonaventure/AFP/Getty Images Some of China’s most valuable public companies could abandon their American stock listings within months, experts have warned, after reports emerged that Beijing is planning a wider crackdown on tech companies going public overseas. The development means that more than $2tn (£1.5tn) of capital invested in the US shares of Chinese companies could be at risk. Reports on Friday suggested that Beijing was about to take further action against tech firms that deal…