17 C.F.R. § 38.152
A designated contract market must prohibit abusive trading practices on its markets by members and market participants. Designated contract markets that permit intermediation must prohibit customer-related abuses including, but not limited to, trading ahead of customer orders, trading against customer orders, accommodation trading, and improper cross trading. Specific trading practices that must be prohibited by all designated contract markets include front-running, wash trading, pre-arranged trading (except for certain transactions specifically permitted under part 38 of this chapter), fraudulent trading, money passes, and any other trading practices that a designated contract market deems to be abusive. In addition, a designated contract market also must prohibit any other manipulative or disruptive trading practices prohibited by the Act or by the Commission pursuant to Commission regulation.
17 C.F.R. § 38.152