The Globe and Mail reports in its Friday edition that Berkshire Hathaway on Wednesday said it has trimmed its huge stake in Apple and shed four common stock holdings -- and kept investors guessing on what could be a major new investment by Warren Buffett. A Reuters dispatch to The Globe says that in a regulatory filing describing its U.S.-listed stock holdings at the end of 2023, Berkshire said it sold 10 million Apple shares in the fourth quarter, but still owned more than 905 million shares worth $174-billion (U.S.). Though Mr. Buffett has been driving Berkshire's investment in Apple, the stock sales in the iPhone maker could have been made by one of his portfolio managers. Berkshire reported no holdings in homebuilder DR Horton, insurer Globe Life, insurance and investment company Markel and Brazilian, or credit card processor StoneCo, after holding more than $1-billion (U.S.) of those stocks at the end of September. The Omaha, Neb., conglomerate also boosted its share of oil company Chevron, one of its biggest holdings, and reduced its stakes in computer and printer maker HP and media company Paramount Global. Berkshire obtained regulatory permission to temporarily keep one or more of its holdings confidential.