.Warren Buffett's Berkshire Hathaway is actually now a $1 trillion company The Washington PostThese Asian agencies in Buffett's Berkshire Hathaway profile have surged, with one soaring 30% CNBCWall Street simply provided Warren Buffett an early birthday celebration present: Berkshire Hathaway is today worth $1 mountain CNNHow Long it Took U.S. Firms to Connect With a $1 Trillion Appraisal Visual CapitalistBerkshire Hathaway covers $1 mountain market cap for first time as Buffett accelerates BofA share purchases Yahoo Finance.