Every time Berkshire Hathaway's 13F filing is released, the market's first reaction is to look for "who Buffett has bought." This quarter, the media spotlight has been almost entirely on his new investment in $UnitedHealth(UNH)$ —after all, the healthcare industry boasts stable cash flow and strong cyclical resilience, and after being hit by multiple events, the stock price has fallen by 70% from its peak. This bottom-fishing move seems very Buffett-like (though his cost basis is at $411, which is essentially "buying at the bottom"). This cost may be relatively higher than that of many investors, but he may continue to bottom-fish in Q3 and further reduce his cost basis.But if you look closely, you will find that the real highlight is not in health