09/20/2004
(A) No Trading Member shall purchase any commodity for future delivery, purchase any call option, or sell any put option for any commodity options contract, for his own account, or for any account in which he has an interest, while holding an order of another person for the purchase of any future, any call option, or sale of any put option, in the same commodity which is executable at the market price or at the price at which such transaction can be made for the Member's own account or the account in which he has an interest.Members are reminded that the prohibition against trading ahead of customer orders contained in these rules is applicable at all points during the trading day. The prohibition is relevant to all forms of orders, including market-on-close orders. This is especially important during the last trading day in energy contracts, which have half-hour closing ranges, where customers may request such orders executed over the entire close.
(B) No Trading Member shall sell any commodity for future delivery, sell any call option or purchase any put option for his own account, or for any account in which he has an interest, while holding an order of another person for the sale of any future, any call option, or purchase of any put option, in the same commodity which is executable at the market price or at the price at which such transaction can be made for the Member's own account or the account in which he has an interest.