Setting Price Format (Price Settings)

This window is used to set price formatting by asset class. (Setup > System Preferences > Symbol > Price display format button.)

Select the asset class on the left, then choose formatting options. To make exceptions, enter a symbol, then click Add. The settings for that symbol default to the current settings of its asset class.

There are four price formats: compact (no price delimiter, decimals fractions, and solidus (the fraction of a 32^nd includes numerator-slash-denominator).

By default, contracts quoted in decimals are formatted as decimals and contracts quoted in fractions are formatted in fractions.

Synthetic strategies are governed by these selections. If native mode is selected, then the native mode of the leg used for defining tick size is used.

Fractions are disabled for equities and currencies.

Examples: EP and TUA (Note, the CME rounds down the decimal for price formatting fractions, i.e. 7/8 = 0.875 which is rounded down to display 8 and ¾ = 0.75 which is rounded down to 7).

How prices are formatted

It’s helpful to be acquainted with this formatting, as the selections you make in price settings govern not only how prices are displayed but also how prices must be entered, such as when entering manual fills or using keyboard order entry.

X = digit from integer part of price

Y = digit from decimal of fractional part of price

Z = digit from sub-fractional part of price

Decimal:

XXXX{dec.separator}YY

Fraction:

XXXX{frac.separator}YY{dot}ZZ

Native:

XXXXYYZZ

The number of digits in YY in decimal format is determined by the decimal price format settings.

The number of digits in Y in fractional format is calculated in this way:

For ordinary fractional scales: change fractions to decimals, take the decimal representation with the least number of decimal places, and use that number. For example:

TYA

1/2 of 1/32

.5 of .03125

.5 has the least number of decimal places, so 1 digit is used

123’09.0 or 123’09.5

FVA

1/4 of 1/32

.25 of .03125

.25 has the least number of decimal places, so 2 digits are used

123’17.00 or 123’17.25 or 123’17.50 or 123’17.75

For other rational scales, such as 1/7 or 1/32 or 1/12 of 1/32, 6 digits are used. Synthetic spreads with rational scales are displayed with a maximum of 10 digits in decimal mode.

Configure price format for…

To select fractions:

Click the Display quoted fractions in check box, then click Fractions.

To select decimals:

Click the Display quoted decimals in decimals check box.

Click the Display quoted fractions in checkbox, then click Decimals.

To select compact formatting:

Select Compact for both Decimals and Fractions

Price format settings

Decimal

•      Pick a separator for the decimal (dot or comma):

•      Choose the number of decimal places:

The system uses whichever is smaller: the number you set here or the number of decimal places in the contract’s tick size (or price scale for contracts quoted in decimals).

If you select All, then the number of decimal places shown is equal to the number of decimal places in the contract’s tick size (or price scale for contracts quoted in decimals).

•      Select the number of additional decimal places for average prices:

This setting applies to Order Ticket (Fill Price, NC Fill Price, and Yield Fill Price columns) and Orders and Positions (Avg Fill Price, NC Avg Fill Price, and Yield Avg Fill Price columns; and Price, NC Price, and Yield Price in the summary row on both the Confirmations tab and in Open Position Summary tab).

•      Select the number of decimal places for yield prices: