Warren Buffett’s Berkshire Hathaway built a sizable new stake in Taiwan Semiconductor in the third quarter, according to a quarterly regulatory filing. The conglomerate added more than 60 million shares of the Taiwanese chipmaker’s American depositary receipts, worth $4.1 billion (1.2% of TSM) at the end of the third quarter, the filing showed. Taiwan Semiconductor was Berkshire’s 10th biggest holding at the end of September. The chip stock jumped more than 5% in after-hours trading Monday on the news. It’s down nearly 40% this year, however, as the semiconductor industry grappled with U.S.-China tensions and the boom-and-bust of demand. The Omaha-based company also took new positions in lumber maker Louisiana-Pacific (worth $297 million) and investment bank Jefferies (worth $12.8 million) in the third quarter, the filing showed. This is breaking news. Please check back for updates.
