Hong Kong stocks rose by the most in nearly three weeks on Thursday, tracking gains in global markets as dip-buying kicked in after a sell-off triggered by jitters over elevated valuations of technology companies. The Hang Seng Index rallied 2.1 per cent to 26,485.90 at the close, the biggest gain since October 20. The Hang Seng Tech Index advanced 2.7 per cent. On the mainland, the CSI 300 Index climbed 1.4 per cent and the Shanghai Composite Index rose 1 per cent. Chinese chipmaker...