.Warren Buffett's Berkshire Hathaway is today a $1 trillion company The Washington PostThese Asian firms in Buffett's Berkshire Hathaway collection have actually risen, with one escalating 30% CNBCWall Street just provided Warren Buffett an early birthday present: Berkshire Hathaway is today worth $1 mountain CNNHow Long it Took USA Providers to Reach a $1 Trillion Valuation Visual CapitalistBerkshire Hathaway covers $1 mountain market hat for very first time as Buffett accelerates BofA equity purchases Yahoo Financial.