.Warren Buffett's Berkshire Hathaway is now a $1 trillion firm The Washington PostThese Asian companies in Buffett's Berkshire Hathaway portfolio have risen, along with one skyrocketing 30% CNBCWall Street just provided Warren Buffett a very early birthday celebration gift: Berkshire Hathaway is today worth $1 mountain CNNHow Long it Took U.S. Companies to Connect With a $1 Mountain Appraisal Visual CapitalistBerkshire Hathaway covers $1 trillion market cap for very first time as Buffett speeds up BofA equity purchases Yahoo Financial.