margin
(57) (A) The term “margin”, when used with respect to a security futures product, means the amount, type, and form of collateral required to secure any extension or maintenance of credit, or the amount, type, and form of collateral required as a performance bond related to the purchase, sale, or carrying of a security futures product. (B) The terms “margin level” and “level of margin”, when used with respect to a security futures product, mean the amount of margin required to secure any extension or maintenance of credit, or the amount of margin required as a performance bond related to the purchase, sale, or carrying of a security futures product. (C) The terms “higher margin level” and “higher level of margin”, when used with respect to a security futures product, mean a margin level established by a national securities exchange registered pursuant to section 78f(g) of this title that is higher than the minimum amount established and in effect pursuant to section 78g(c)(2)(B) of this title .