Buffett-backed BYD just surpassed Tesla in EV sales. Now its shares are slumping after hint that Berkshire Hathaway may be preparing to sell its stake

BYD shares sank the most in nearly two years after a stake matching the size of Berkshire Hathaway’s position in the Chinese electric-car giant appeared in Hong Kong’s clearing system, fueling speculation that Warren Buffett’s company may be adjusting its holdings. Read More