Shares of the company, CATL, surged in their first day of trading. Onshore U.S. investors were blocked from buying its stock as a “decoupling” of finance continued.

Zeng Yuqun, Chairman of Chinese battery giant CATL, right, bangs a gong to start CATL's debut trading on the Hong Kong stock exchange on May 20. Shares in Chinese battery giant CATL soared almost 17 percent on its first day of trading Tuesday.

CATL, which produces more than a third of all electric vehicle batteries sold worldwide, raised US$4.6 billion in Hong Kong.