Abstract: In an electronic trading system, a method for facilitating block trading of financial instruments includes establishing a set of tiered block trading ranges, each tiered block trading range having a lower limit defining a minimum order size for filling block trades within the respective tiered block trading range, receiving a block order for a financial instrument, the block order having a block size that falls within a first tiered block trading range, and executing the block order in accordance with the minimum order size defined by the lower limit associated with the first tiered block trading range. The electronic trading system is adapted to identify executed trades with matching parties and financial instruments, combine each set of matching trades into a single trading order, reverse out the individual matching trades, execute the single trading orders, and transmit data corresponding to the executed trades to the transacting parties or a clearing entity.