.Warren Buffett's Berkshire Hathaway is today a $1 mountain firm The Washington PostThese Asian firms in Buffett's Berkshire Hathaway collection have risen, with one skyrocketing 30% CNBCWall Street simply offered Warren Buffett a very early birthday present: Berkshire Hathaway is actually right now worth $1 mountain CNNHow Long it Took U.S. Providers to Reach Out To a $1 Trillion Evaluation Visual CapitalistBerkshire Hathaway covers $1 trillion market cap for first time as Buffett speeds up BofA assets sales Yahoo Money.