.Warren Buffett's Berkshire Hathaway is today a $1 mountain provider The Washington PostThese Asian firms in Buffett's Berkshire Hathaway portfolio have climbed, along with one skyrocketing 30% CNBCWall Road simply provided Warren Buffett a very early birthday present: Berkshire Hathaway is actually now worth $1 trillion CNNHow Long it Took USA Providers to Reach Out To a $1 Trillion Assessment Visual CapitalistBerkshire Hathaway covers $1 trillion market cap for very first time as Buffett increases BofA equity sales Yahoo Money.