From what i understand from the reports that were published earlier Michael Saylor holds around 17k BTCitcoin, Tim Draper purchased a whole lot more than him during the Silk road auction, no idea whether he is holding those coins still and Winklevoss Twins have a much bigger bag of 70k BTC, so if holding the most BTCitcoin would make anyone the richest then Tim Draper and the Winklevoss Twins will be the top holders.