However, he has trimmed the Apple stake over the past year and has recently also sold off some of his stock in Bank of America and Chinese EV maker BYD while doing very little buying.
As a result, Buffett is now sitting on nearly US$277 billion ($424 billion) in cash, up from what was already a record $294 billion just three months earlier.
"This could alarm the markets especially given the news from last week" with weak tech earnings, a disappointing jobs report and uncertainty about the future of interest rates, Edward Jones analyst Jim Shanahan said.