The Index reported on hidden wealth and uncovered more than 400 hidden billionaires since its founding.[8] Bloomberg Billionaires founding editor Matthew Miller said in 2013 that hidden billionaires are identified by "making sure that we have accounted for all the companies in closely-held assets around the world."[9] Some of the billionaires the index has uncovered includes JPMorgan Chase chairman Jamie Dimon,[10] In-N-Out Burger president Lynsi Torres,[11] Ferrari Motors heir Piero Ferrari[12] and the chairman of Biel Crystal Manufactory Yeung Kin-Man.[13]