.Warren Buffett's Berkshire Hathaway is now a $1 trillion provider The Washington PostThese Asian firms in Buffett's Berkshire Hathaway profile have surged, along with one shooting up 30% CNBCWall Road only gave Warren Buffett a very early birthday celebration gift: Berkshire Hathaway is now worth $1 trillion CNNHow Long it Took U.S. Firms to Reach Out To a $1 Trillion Appraisal Visual CapitalistBerkshire Hathaway covers $1 trillion market cap for very first time as Buffett increases BofA assets purchases Yahoo Money management.