Steyer is co-managing partner of Farallon Capital Management, LLC, which manages the wealth of a number of other high-profile and high-net-worth individuals on our list. It’s a position he has held since founding the company in 1986. He got his start in the Risk Arbitrage Department of Goldman, Sachs & Co.

He’s a private-equity-firm investor turned tequila entrepreneur who happens to have the priciest home on the market in Sonoma—a 362-acre spread that features a stunning 11,600-square-foot, Tuscan-style villa on a hilltop. He bought the completely undeveloped property in 1990 for a little more than $3 million, and transformed it into a lavish estate that boasts …

This entrepreneur co-founded the technological venture Foursquare—a location-based social networking site for mobile devices.  The joint venture is now valued at $600 million and Selvadurai has been named one to watch by AOL and Fox Business Network.

A champion of competition, Sanders, as co-founder and CEO of semiconductor manufacturer AMD, competitor to Intel. Before he stepped aside in 2002, AMD thrived while thousands of firms ended up in the tech graveyard. What is truly remarkable about Sanders is his love for the people in his company. His motto is “people first, products …

Sandberg is COO of Facebook, growing its user base to 800 million and counting – she also helped monetize the social networking site. Sandberg’s responsibilities at the mogul social networking site include sales, marketing, business development, human resources, public policy and communications. Before her time at Facebook, she was Vice President of Global Online Sales …