The 91-year-old "Oracle of Omaha" revealed his top equity holdings in his widely read annual letter. Jahan Noor American Express CoApple Inc.Bank of America CorpBank of New York Mellon CorpBerkshire Hathaway Incbusiness newsChevron CorpCoca-Cola CoInvestment strategyItochu CorpJPMorgan Chase & CoMarubeni CorpMitsubishi CorpMitsui & Co LtdMoody's CorpPNC Financial Services Group IncStock marketsWells Fargo & Co