Warren Buffett's 35-year-old protege Tracy Britt Cool is leaving Berkshire Hathaway to start her own mini-Berkshire

Warren Buffett's 35-year-old protege Tracy Britt Cool is leaving Berkshire Hathaway to start her own mini-Berkshire https://t.co/EgNkNweETL

— The Wall Street Journal (@WSJ) September 18, 2019