Who is Twitter's mysterious 'big investor'? The only readily found picture of Rizvi is a snapshot of him sitting with Twitter CEO Dick Costolo and Alwaleed in a New York hotel after the prince bought Twitter shares. He has a big-name client list Those who invest with Rizvi include British billionaire Richard Branson and Jeffrey Skoll, the former eBay executive and film producer, according to people with knowledge of the matter. It is not clear whether they are among the investors he brought into Twitter. Hollywood was his first love Before turning his attention to the Internet, Rizvi's deal-making focused on Hollywood. He helped Hugh Hefner take Playboy Enterprises private; bought and then sold the Hollywood film studio behind the "Twilight" series; and led the buyout of a leading talent agency, International Creative Management (ICM). Former Google executive Chris Sacca got Rizvi into Twitter In late 2010, Sacca approached Rizvi with an offer: Sacca's friend Evan Williams had stepped down as CEO of Twitter and was seeking to sell 10 percent of the company. Rizvi soon snapped up the shares for $340 million, according to people familiar with the matter. He counts Bill Gates and Michael Bloomberg among his neighbours Rizvi owns a sprawling three-home compound in Greenwich, Connecticut, and a 1.65-acre Palm Beach, Florida, estate near Bill Gates and Michael Bloomberg. He was born in India but moved to Iowa Falls, a town of 5,200 people, when he was five. Rizvi's first business venture was a telecom company With the proceeds from the sale, he financed his first big buyout in 1995, when he bought the electronic manufacturing business of a Puerto Rico phone company. Refocusing it on making higher-cost equipment, he spent the next four years boosting the company's annual revenue from $10 million to $450 million. Source: Reuters