Robinhood attracted regulatory scrutiny earlier this year when investors used it to speculate on GameStop, AMC Entertainment and other so-called meme stocks that seemed to increase in value based on social media frenzy without the underlying financials. However, FINRA suggested its investigation stretched back five years. During certain periods since September 2016, the firm has negligently communicated false and misleading information to its customers, FINRA claimed, concerning whether customers could place trades on margin, how much cash was in customers' accounts, how much buying power or "negative buying power" customers had, the risk of loss customers faced in certain options transactions and whether customers faced margin calls. FINRA pointed to the suicide of one Robinhood user who in a note found after his death, "expressed confusion as to how he could have used margin to purchase securities because, he believed, he had not 'turned on' margin in his account."