.Warren Buffett's Berkshire Hathaway is now a $1 mountain firm The Washington PostThese Asian agencies in Buffett's Berkshire Hathaway profile have actually surged, with one escalating 30% CNBCWall Street only gave Warren Buffett an early special day gift: Berkshire Hathaway is now worth $1 trillion CNNHow Long it Took United State Firms to Get To a $1 Mountain Appraisal Visual CapitalistBerkshire Hathaway tops $1 mountain market cap for first time as Buffett increases BofA share sales Yahoo Money management.