Jin10 data October 27 news, Berkshire Hathaway (BRK.A.N, BRK.B.N) has rarely received a “sell” rating, as analysts remain cautious about its earnings outlook and continue to worry about Warren Buffett's impending retirement and macro risks. New York investment bank KBW (Keefe, Bruyette & Woods) downgraded the group's Class A shares from “market perform” to “underperform,” citing that “many factors are moving in the wrong direction.” Among the six analysts tracked by institutions who rated the company, this is the only sell rating. Analyst Meyer Shields wrote in the report: “In addition to our ongoing concerns about macro uncertainty and Berkshire's historically unique succession risk, we believe that as earnings challenges arise and/or persist, the stock will underperform.” Berkshire's Class B shares fell about 1% on Monday. So far this year, the stock has only risen 7.8%, while the S&P 500 index has risen 16% during the same period.