.Warren Buffett's Berkshire Hathaway is now a $1 trillion provider The Washington PostThese Asian firms in Buffett's Berkshire Hathaway portfolio have climbed, along with one rising 30% CNBCWall Street just gave Warren Buffett an early birthday celebration present: Berkshire Hathaway is now worth $1 trillion CNNHow Long it Took United State Companies to Reach a $1 Mountain Appraisal Visual CapitalistBerkshire Hathaway tops $1 mountain market limit for very first time as Buffett speeds up BofA assets purchases Yahoo Money management.