Warren Buffett got an early birthday present Wednesday when Berkshire Hathaway closed the session with a $1 trillion market value for the first time. The Berkshire CEO, who turns 94 on Friday, is being rewarded for nearly six decades of leadership at Berkshire. Berkshire’s Class A stock finished the day at $696,502, up 0.8%, while the B shares ended at $464.59, up 0.9%.