Group 1 - Warren Buffett, the CEO of Berkshire Hathaway, has achieved a net worth of approximately 142billionbyconsistentlyoutperformingthemarketsthroughacarefulinvestmentapproach[1]−Buffettfocusesonlong−terminvestmentsinhigh−qualitybusinesseswithenduringcompetitiveadvantages,emphasizingvalueinvestingbyassessingstocksbasedonattractivepricingrelativetoearningsandrevenueestimates[2]−Recently,BuffettandBerkshirehavebeennetsellers,liquidatingpositionsmorethanacquiringnewstocks[3]Group2−OnFebruary11,Buffettsold203,091sharesofDaVitaIncatanaveragepriceof156.01, totaling approximately $31.68 million, and this sale was not prearranged [6] - Following the sale, Berkshire continues to hold about 35.89 million shares of DaVita, representing a roughly 45% stake in the company [7] - The sale was influenced by a share repurchase agreement from April 2004, which requires Berkshire to sell shares if its stake exceeds 45%, indicating that the sale does not reflect a bearish outlook on DaVita [9]