Steve Ballmer

Steve Ballmer is known for being the CEO of the high-tech giant Microsoft for 14 years. He was invited to this position by his university friend Bill Gates who founded the corporation. Under Steve Ballmer's leadership, the company’s net profit has ballooned by more than 200%. Of course, this stunning performance has benefitted his personal wealth. Currently, the net worth of the former Microsoft CEO is estimated at $120.5 billion.

Eric Schmidt

Eric Schmidt, whose fortune is estimated at $20.7 billion, has made a significant contribution to the development of the technology industry, being a top executive at several leading companies. He worked at Siebel Systems and Novell before joining Google in 2001 at the invitation of its founders Larry Page and Sergey Brin. Initially, Eric Schmidt served as chairman of the board of directors. Later, he became the CEO, holding this position until 2011.

Ramzi Musallam

Ramzi Musallam is a key figure at Veritas Capital, a private American firm specializing in technology and government investments. He joined the company in 1998 at the invitation of its founder Robert McKeon and was long considered the second most significant top manager. Today, Musallam serves as the CEO of Veritas. His capital is estimated at more than $9 billion.

John Brown

John Brown took over the helm of Stryker after the death of its previous CEO, the founder's son. In a short time, he transformed Stryker from a small company into a powerful corporation in the medical devices industry. Under his leadership, it went public in 1977 and its revenues grew from $23 million to $4 billion. John Brown stepped down as CEO in 2009 and later became chairman of the board of directors. Nowadays, his wealth equals $7.4 billion.

Jonathan Gray

Jonathan Gray rounds out the list of billionaires, with a fortune estimated at $7.3 billion. Since 1992, he has been working at Blackstone Group, an asset management firm. Currently, Jonathan Gray serves as the president and chief operating officer of the company. Besides, he is the chairman of the board of directors at Hilton Worldwide.