China-based MetaX Integrated Circuits co-founder Chen Weiliang has become a billionaire after shares of the chipmaker startup soared nearly 700% on its market debut. As per Bloomberg and Forbes, Weiliang, who is a former AMD engineer, now has a fortune of $6.5 billion. Earlier, Moore Threads founder Zhang Jianzhong, an ex-Nvidia manager, became a billionaire after his chipmaker startup's debut.