1.22—Use of customer funds restricted.
No futures commission merchant shall use, or permit the use of, the customer funds of one commodity and/or option customer to purchase, margin, or settle the trades, contracts, or commodity options of, or to secure or extend the credit of, any person other than such customer or option customer. Customer funds shall not be used to carry trades or positions of the same commodity and/or option customer other than in commodities or commodity options traded throught the facilities of a contract market.