Investing.com -- Warren Buffett's Berkshire Hathaway (NYSE: BRKa) has offloaded 1.3 million Hong Kong-listed shares of electric vehicle giant BYD (SZ:002594) in a move worth HK$310.5 million, according to media reports.

Citing a filing with the Hong Kong stock exchange, the reports said Berkshire trimmed its holdings in Shenzhen-based BYD to 6.9% from 7%.

The conglomerate had originally purchased roughly 225 million shares in the company in 2008, a lucrative bet that Buffett has credited to Charlie Munger, the late vice-chairman of Berkshire.

China's BYD has transformed itself from a mobile phone battery maker into one of the world's largest EV players, even surpassing U.S. rival Tesla (NASDAQ: TSLA)'s sales of battery-powered cars in the fourth quarter. Like other EV groups in China, BYD has moved to cut the prices of its plug-in hybrids in a bid to attract cost-conscious domestic consumers.