Required records.

A designated contract market that trades a security index or security futures product shall maintain in accordance with the requirements of § 1.31 of this chapter books and records of all activities related to the trading of such products, including: Records related to any determination under subpart B of this part whether or not a futures contract on a security index is a narrow-based security index or a broad-based security index. [77 FR 66344, Nov. 2, 2012]