Global venture capitalist Parag Saxena paid $13.8 million for unit 29C at 15 Central Park West, twice what the seller paid for the apartment, according to city records posted today. Saxena, co-founder and CEO at Vedanta Capital, bought the unit on March 19 from an unidentified buyer, who paid only $6.9 million for it on Dec. 13. Other wealthy financiers in the building include former Citigroup CEO Sandy Weill and Goldman Sachs CEO Lloyd Blankfein. Saxena, a former CEO and fund manger with Invesco Private Capital, formed Vedanta Capital in 2006 with two partners. He ranked No. 31 in Forbes’ 2008 Midas List of high-tech dealmakers. Last month, The Real Deal took a unit-by-unit look at the ultra-elite tower.