Warren Buffett’s Berkshire Hathaway just made headlines with its huge investment in U.S. Treasury bills, surpassing even the Federal Reserve’s holdings. In the first half of the year, Berkshire scooped up $230 billion in these low-risk, short-term securities, making it a major player in this investment arena. Despite his usual big bets on stocks, Buffett’s recent move into Treasury bills, coupled with selling off billions in Apple and other stocks, has boosted his company’s cash reserves to a s...