17 C.F.R. Part 21 – Special Calls | Midpage21.00Preparation and transmission of information upon special call.21.01Special calls for information on controlled accounts from futures commission merchants, clearing members and introducing brokers.21.02Special calls for information on open contracts in accounts carried or introduced by futures commission merchants, clearing members, members of reporting markets, introducing brokers, and foreign brokers.21.03Selected special calls-duties of foreign brokers, domestic and foreign traders, futures commission merchants, clearing members, introducing brokers, and reporting markets.21.04Special calls for information on customer accounts or related cleared positions.21.05Delegation of authority.21.06Delegation of authority to the Director of the Division of Clearing and Risk.