Think Progress: Forbes: Koch Brothers Now Worth $50 Billion

September 21, 2011- Forbes estimates that Tea Party petrochemical scions Charles and David Koch have a fortune of $25 billion each, making them the fourth richest Americans, behind only Bill Gates, Warren Buffet, and Larry Ellison. Their combined wealth of $50 billion is exceeded only by the Microsoft founder’s $59 billion fortune. Buoyed by aggressive speculative trading on volatile energy markets, the Koch brothers accumulated $15 billion in wealth since March 2010, a 43 percent increase.

VIEW IN ORIGINAL CONTEXT: