.Warren Buffett's Berkshire Hathaway is now a $1 mountain company The Washington PostThese Asian agencies in Buffett's Berkshire Hathaway portfolio have actually surged, along with one soaring 30% CNBCWall Road simply provided Warren Buffett an early birthday celebration gift: Berkshire Hathaway is now worth $1 trillion CNNHow Long it Took U.S. Companies to Reach a $1 Trillion Appraisal Visual CapitalistBerkshire Hathaway covers $1 trillion market limit for first time as Buffett speeds up BofA equity purchases Yahoo Money management.