The derivatives regulator alleges the defendants made misleading statements in email ads and in an online trading room
Options Clearing Corp. settled the case without admitting or denying the regulators' findings
Regulators approved amendments designed to simplify requirements and ease some restrictions
Five companies and four people charged
Proposal seeks to reduce minimum requirement to 15% of current market value
Advisory highlights ways to identify fraudulent social media profiles
The duo provided "significant information" that led to an investigation
Regulator says "there is a point at which a delay becomes unreasonable"
Regulators take aim at manipulative behaviour
Heath Tarbert, who takes over as top derivatives regulator on July 15, previously held senior position at U.S. Treasury