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  Bill Gates William Henry Gates III  (born October 28, 1955) is an American  business magnate , software developer, investor, author, and philanthropist. He is a co-founder of  Microsoft , along with his late childhood friend  Paul Allen . [2] [3]  During his career at Microsoft, Gates held the positions of  chairman ,  chief executive officer  (CEO),  president  and  chief software architect , while also being the largest individual  shareholder  until May 2014. [4]  He was a major entrepreneur of the  microcomputer revolution  of the 1970s and 1980s. Gates was born and raised in  Seattle, Washington . In 1975, he and Allen founded Microsoft in  Albuquerque, New Mexico . It became the world's largest  personal computer  software company. [5] [a]  Gates led the company as chairman and CEO until stepping down as CEO in January 2000, succeeded by  Steve Ballmer , but he rema...

  Elon Musk Elon Reeve Musk   FRS  ( / ˈ iː l ɒ n /   EE -lon ; born June 28, 1971) is a  business magnate  and investor. He is the founder, CEO, and Chief Engineer at  SpaceX ; angel investor, CEO, and Product Architect of  Tesla, Inc. ; founder of  The Boring Company ; and co-founder of  Neuralink  and  OpenAI . With an estimated net worth of around US$242 billion as of July 25, 2022, [5]  Musk is the wealthiest person in the world according to both the  Bloomberg Billionaires Index  and  Forbes '  real-time billionaires list. [6] [7] Musk was born in  Pretoria , South Africa, where he grew up. He briefly attended the  University of Pretoria  before moving to Canada at age 17, acquiring citizenship through his Canadian-born mother. Two years later, he matriculated at  Queen's University  and transferred to the  University of Pennsylvania , where he received bachelor'...