.Warren Buffett's Berkshire Hathaway is today a $1 mountain firm The Washington PostThese Asian firms in Buffett's Berkshire Hathaway portfolio have surged, along with one soaring 30% CNBCWall Street only gave Warren Buffett a very early special day present: Berkshire Hathaway is now worth $1 mountain CNNHow Long it Took USA Providers to Connect With a $1 Trillion Valuation Visual CapitalistBerkshire Hathaway tops $1 trillion market limit for very first time as Buffett increases BofA share purchases Yahoo Finance.