19/Tech 4: Jeff Bezos
In the 19th position, Amazon's Jeff Bezos is enjoying a 40 percent spike in his company's stock value, which has pumped up his personal net worth by $6.8 billion to an estimated $25.2 billion. While his company continues to report increases in sales, Bezos can afford to pursue a variety of other activities, including last year's expedition to the ocean floor in search of the lost rocket engines from the Apollo 11 moon mission. The rockets have not yet been brought to the surface, but reports suggest that such an effort is under development. Forbes reports that Bezos also has invested in the development of a rocket that can take off and land vertically, and also purchased a robotics firm as part of an effort to accelerate his order-fulfillment process.