This section describes the pricing and tick convention used for instruments available on CQG. The CQG price is the format used in all price tags in order entry and market data interfaces. One method for obtaining the CQG price is from tag 270-MDEntryPX of the Market Data Incremental Refresh tag 35-MsgType=X message.
Tick Convention
The tick size is the minimum fluctuation in price allowed for a futures or options contract during a trading session as specified in the security definitions.
Fractional Pricing
Instruments that require decimal-to-fractional price conversion have their
871-InstrAttribType = 25 (Price Denominator for Main Fraction) and
871-InstrAttribType = 26 (Price Denominator for Sub Fraction, optional) set,
where the 872-InstrAttribValue field contains their values.
Tick Conversion Grid
