.Warren Buffett's Berkshire Hathaway is now a $1 mountain business The Washington PostThese Asian firms in Buffett's Berkshire Hathaway portfolio have surged, along with one escalating 30% CNBCWall Street merely provided Warren Buffett an early birthday gift: Berkshire Hathaway is actually now worth $1 mountain CNNHow Long it Took U.S. Companies to Get To a $1 Mountain Valuation Visual CapitalistBerkshire Hathaway covers $1 trillion market cap for very first time as Buffett increases BofA share purchases Yahoo Money management.