In a rare move, more than three dozen BYD executives increased their stakes in the world's largest electric-vehicle (EV) maker, which is likely to boost investor confidence after its shares plunged more than 20 per cent from an all-time high in May. Thirty-seven executives, including five vice-presidents, spent a combined 52.3 million yuan (US$7.3 million) to buy 488,200 Shenzhen-listed shares to "display their continued optimism about the investment value of the company", BYD said in filings to the Hong ...