BYD shares tumble on speculation over Warren Buffett exit

Shares in Chinese electric car maker $BYD Company ADR (BYDDY.US)$ fell 12 per cent after a stake close to the size of Berkshire Hathaway’s appeared in the Hong Kong stock exchange clearing system, prompting speculation that Warren Buffett’s conglomerate might dump its holdings.

$BYD COMPANY (01211.HK)$ shares registered with the Hong Kong stock market’s CCASS clearing system rose on Monday, according to data from the exchange, which showed that almost all of the increase came from accounts with Citigroup. $Berkshire Hathaway-A (BRK.A.US)$ $Berkshire Hathaway-B (BRK.B.US)$