JD.com, Alibaba, CNOOC power best stock rally since April as China dangles fresh stimulus, US delisting speculation returns Hong Kong stocks surged by the most in four months from a five-month low after Beijing unveiled further stimulus to boost the economy amid Covid-19 and power crises. Alibaba Group and JD.com powered tech gains on speculation about progress to tackle US delisting risk. The Hang Seng Index surged 3.6 per cent to 19,968.38 at the close of Thursday trading, the most since a 4 per cent jump on April 29, after a typhoon warning shuttered the morning trading session. The Tech…