.Warren Buffett's Berkshire Hathaway is today a $1 mountain firm The Washington PostThese Asian firms in Buffett's Berkshire Hathaway collection have risen, along with one shooting up 30% CNBCWall Road just offered Warren Buffett an early birthday party present: Berkshire Hathaway is actually today worth $1 trillion CNNHow Long it Took U.S. Providers to Reach Out To a $1 Mountain Appraisal Visual CapitalistBerkshire Hathaway covers $1 trillion market hat for very first time as Buffett speeds up BofA stock purchases Yahoo Money.