Shkreli was found guilty last August of three counts of fraud. Federal prosecutors had suggested a sentence of 15 years, while Shkreli's lawyers said that he should get no more than 18 months. Shkreli, who ran a hedge fund, was convicted of lying and tricking his investors.
From threatening Hillary Clinton to streaming Lil Wayne's Tha Carter V album, Shkreli has been in the news a lot over the years. But he first came to infamy in 2015 when he hiked up the price of an Aids pill 5,000%, to $750 per pill.