.Warren Buffett's Berkshire Hathaway is actually today a $1 mountain firm The Washington PostThese Asian firms in Buffett's Berkshire Hathaway collection have risen, along with one rising 30% CNBCWall Road merely gave Warren Buffett an early special day gift: Berkshire Hathaway is now worth $1 trillion CNNHow Long it Took United State Business to Reach Out To a $1 Trillion Evaluation Visual CapitalistBerkshire Hathaway tops $1 mountain market hat for first time as Buffett accelerates BofA stock sales Yahoo Finance.