From the SEC's original complaint:
https://www.sec.gov/litigation/complaints/2015/comp-pr2015-2...
> 44. On March 2, 2011 , Shkreli stated in e-mails to MSMB investors that "MSMB returned +4.24% in February 2011 " and had "returned +41.71 % since inception on 11/1/2009." In fact, by the end of February 2011, MSMB had virtually no assets. MSMB had suffered over $7 million in losses in its account at Executing Broker as the result of its trading in Company A on February 1, 2011. Even setting aside the losses at Executing Broker, the net asset value of MSMB's prime brokerage account and the cash balance in its bank account amounted to only about $58,500.
> 45. Shkreli continued to send "performance estimates" until September 2012, when he informed the limited partners that through June 2012, MSMB had "returned +79.49% net of fees since inception on 11 /1/2009." At the end of June 2012, however, MSMB had no assets in its prime brokerage account or its bank account.
He lost 100% of his investors' money and was creating fake financial statements to lie to them about his massive losses.
Eventually, he used other people's money and huge gambles to recoup these losses. He also entered into fraudulent 'consulting agreements' with disgruntled investors from his hedge fund to make them whole using a different company's assets, essentially stealing from that company's shareholders.
All of this is incredibly illegal.