What will happen to the new 5+5 market depth + reduced tick value on 5Y and 3Y with this new possibility to hide large transactions in realtime (to be reported only later)? "The date, execution time, contract details, price and quantity of block trades are reported upon receipt of the block information by GCC. Block trade information is reported on the MerQuote system and may be accessed by entering the code âBLKâ. The information will also be displayed on cmegroup.com at the following link: http://www.cmegroup.com/tools-information/blocktrades.html Block trade information is also displayed on the trading floor. Block trade prices are published separately from transactions in the regular market. Block trade volume by contract is detailed in the daily volume reports published by the Exchange." Oh, to play the game, 'they' have to a $.75 surcharge for block trades... - B.