(a) Notification requirement for notice-designated contract markets. Any self-regulatory authority that is registered with the Commission as a designated contract market under section 5f of the Act shall, when filing a proposed rule change regarding customer margin for security futures with the SEC for approval in accordance with section 19(b)(2) of the Exchange Act, concurrently provide to the Commission a copy of such proposed rule change and any accompanying documentation filed with the SEC.

(b) Filing requirements under the Act. Any self-regulatory authority that is registered with the Commission as a designated contract market under section 5 of the Act shall, when filing a proposed rule change regarding customer margin for security futures with the SEC for approval in accordance with section 19(b)(2) of the Exchange Act, submit such proposed rule change to the Commission as follows:

(1) If the self-regulatory authority elects to request the Commission's prior approval for the proposed rule change pursuant to section 5c(c)(2) of the Act, it shall concurrently file the proposed rule change with the Commission in accordance with § 40.5 of this chapter.

(2) If the self-regulatory authority elects to implement a proposed rule change by written certification pursuant to section 5c(c)(1) of the Act, it shall concurrently provide to the Commission a copy of the proposed rule change and any accompanying documentation filed with the SEC. Promptly after obtaining SEC approval for the proposed rule change, such self-regulatory authority shall file its written certification with the Commission in accordance with § 40.6 of this chapter.