17 C.F.R. § 18.05 Maintenance of books and records.
Title 17 - Commodity and Securities Exchanges
Every trader who holds or controls a reportable futures or option position shall keep books and records showing all details concerning all positions and transactions for future delivery in the commodity on all reporting markets, all positions and transactions in the commodity option, and all positions and transactions in the cash commodity, its products and byproducts and, in addition, commercial activities that the trader hedges in the commodity underlying the futures contract in which the trader is reportable, and shall upon request furnish to the Commission any pertinent information concerning such positions, transactions or activities. [71 FR 37821, July 3, 2006]
Title 17: Commodity and Securities Exchanges
PART 18—REPORTS BY TRADERS
§ 18.05 Maintenance of books and records.

