Mumbai: Warren Buffett''s Berkshire Hathaway Inc sold $41 million worth of shares in PetroChina Co Ltd on September 6, a third time in two months.

Berkshire sold 28.004 million shares at an average price of HK$11.47 apiece, trimming its stake in PetroChina to 8.93 per cent from 9.07 per cent of the firm''s free-floating shares, according to data compiled by the Hong Kong stock exchange.