Agencies China Mobile shares have risen as they started trading in Shanghai after raising $7.7bn (£5.7bn) in China’s biggest public offering in a decade. The shares opened 9.4% higher before easing back in morning trade. China Mobile’s smaller rivals, China Telecom and China Unicom, have already made the move to their home country. The three firms were delisted from the New York Stock Exchange after a Trump-era decision to restrict investment in Chinese technology companies. China Mobile’s Hong Kong-listed shares also rose in early trade after the company said it would press ahead with a plan to buy back up...