.Warren Buffett's Berkshire Hathaway is now a $1 trillion business The Washington PostThese Asian companies in Buffett's Berkshire Hathaway portfolio have climbed, along with one shooting up 30% CNBCWall Road just provided Warren Buffett a very early special day gift: Berkshire Hathaway is actually now worth $1 trillion CNNHow Long it Took USA Firms to Reach a $1 Trillion Valuation Visual CapitalistBerkshire Hathaway covers $1 trillion market limit for very first time as Buffett accelerates BofA stock sales Yahoo Financing.