The Block Trade Facility (BTF) is an off-market mechanism that enables traders to register larger transactions in specified contracts with the DGCX and clear them through the DCCC.

Price certainty: Since block trades are transacted at pre-agreed prices between the counterparties, the BTF
provides a price certainty when larger trades are executed.
Execution certainty: All block trades are approved by the exchange as long as they are reported for eligible contracts and do not violate any stipulations of the BTF.
Extended trading hours: Block trades may be reported up to fifteen minutes after the close of trading on any trading day.
The registration of block trades does not affect O-H-L-C prices and volume information in the market. The posting of block trades will not result in triggering any stop-loss orders in the system.