BEIJING — For Americans looking to play the China growth story, Didi 's delisting from the U.S. shows the rising political risk of investing in U.S.-listed Chinese stocks. Following months of speculation, Chinese ride-hailing app Didi announced last week that it would delist from the New York Stock Exchange and pursue a listing in Hong Kong. The company raised $4 billion in an IPO in late June, but came under regulatory scrutiny from Beijing just days later with an order to suspend new user registrations. Didi's shares have plunged more than 50% since the IPO.