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In this Tuesday, Oct. 25, 2016, photo, former Olympic swimmer Michael Phelps poses for a portrait while attending the Quickbooks Connect conference as a featured speaker in San Jose, Calif. Phelps is looking for his next golden opportunity in business after retiring from his sport as the most decorated athlete in Olympic history. He thinks he might find it in Silicon Valley, joining a growing list of athletes and entertainers trying to build upon their fortunes in a technology-driven area teeming with geeky millionaires. (AP Photo/Marcio Jose Sanchez)

Michael Phelps

Olympic champion Michael Phelps has announced his intention to retire after the London Olympics.