Berkshire Hathaway, led by Chairman Warren Buffett, has reported a surge in operating profit for the fourth quarter of last year, along with record cash reserves. Buffett, who turns 94 this year, hinted in his annual shareholder letter that he would soon hand over the CEO position to his successor, Greg Abel, while also expressing concerns about the Trump administration. This has led to speculation that Buffett is preparing for retirement by strengthening the company's finances and issuing warnings about the future of the US and global economies.

Berkshire Hathaway's operating profit for the fourth quarter of last year was $14.5 billion, a 71% increase from the same period last year. This was driven by a 302% surge in underwriting profit from the insurance business and a 50% increase in investment income. Operating profit for the full year was $47.437 billion, a 27% increase. This strong performance came despite a $1.3 billion loss from the wildfires in Los Angeles last month.

Berkshire Hathaway's cash reserves have been growing for 10 consecutive quarters, reaching a record $334.2 billion at the end of last year. This is despite the company having sold off $6.7 billion worth of stocks in the fourth quarter. Buffett did not specify why he was increasing cash reserves in his annual shareholder letter, but he emphasized that "most of the company's capital is invested in stocks and this policy will not change" and that "there is no such thing as preferring cash assets to owning good businesses."

Market analysts believe that Buffett is increasing cash reserves due to concerns about a stock market bubble. Jim Shanahan, a stock analyst at Edward Jones, told Bloomberg that "if Berkshire Hathaway is capturing the US industrial, consumer, service, and retail economy as a whole, it is possible that Buffett is worried about an economic downturn."

There is also speculation that Buffett is preparing to hand over a large cash reserve to his successor. In his shareholder letter, Buffett wrote that "I am currently 94 years old and the day is not far off when Greg Abel will write the annual shareholder letter as CEO in my place" and that "Abel has proven his ability at every turn, just like the late Vice Chairman Charlie Munger." Abel is the CEO of Berkshire Hathaway Energy and the Vice Chairman of Berkshire Hathaway's non-insurance business.

Buffett also unusually expressed his political views in his shareholder letter. Buffett, who is known to be a Democrat, said that he hopes that Berkshire Hathaway's "grandchildren" will pay more taxes in 2024 than they do now and that the money will be used wisely. He also said that "we must take care of the many people who have suffered misfortune through no fault of their own. They deserve better treatment."

He added that "Berkshire Hathaway's long-term success and the 'American miracle' depend on the ability of the American people to participate in the economy" and that "this is something that the government can encourage or take away." Jonathan Levin, a Bloomberg columnist, wrote that this was "a piece of advice for Trump at a time of policy upheaval" and that "I hope Trump will find the 'wisdom and vigilance' that Buffett speaks of and reconsider his prescription for a resurgence of inflation."