Martin Shkreli was a billionaire in 2016.
 Shkreli is the co-founder of the hedge funds Elea Capital, MSMB Capital Management, and MSMB Healthcare; the co-founder and former chief executive officer (CEO) of the pharmaceutical firms Retrophin and Turing Pharmaceuticals (now Vyera Pharmaceuticals); and the former CEO of start-up software company Gdel Systems, which he founded in August 2016
 In 2019, Forbes counted a record 607 billionaires in the U

