3/20/2025

Initial publication of this pending client impact topic.

Currently Available

New Release

March 30

Production

New Release

https://refdata.api.uat.cmegroup.com/refdata/v3/optionSeries

Production

https://refdata.api.cmegroup.com/refdata/v3/optionSeries

series_guid

Unique identifier in alpha-numeric format for the options series.

This unique identifier is used to query the instrument endpoint for all active options contracts listed under the option series record.

String

series_guid_Int

Unique identifier in integer format for the options series.

Integer

seriesName

Option series long name.

positionRemovalDate

Position removal date.

Date

lastUpdated

Timestamp from last time the instrument definition or product was updated:

• first listed

• modified

Date in Time zone (CST)

lastTradeDate

Last date instrument is tradable across all venues and trade types

Date

globexLastTradeDate

Last date instrument is tradable on CME Globex CLOB.

Date Format is in Central Time 

globexFirstTradeDate

The calendar date when the instrument becomes tradable on CME Globex. 

• Only sent if instrument is eligible to be listed on CME Globex

Date Format is in Central Time

firstTradeDate

Clearing first trade date (actual contract trade date)

Date

finalSettlementDate

Final settlement date:

Final settlement date for futures

Date

strikePxCcy

Strike pSpread tick. Used for any spread where there is no “non-consecutive-month” spread tick.
Only applicable to ClearPort contracts.rice currency for an option.

String

exerciseStyleAmericanEuropean

Indicator for American or European option exercise style.

• 0 = American style

• 1 = European style

String

priceBandDl

Decimal locator for price band (priceBand).

String

priceBand

Differential value for price bands on CME Globex.

String

zeroPriceEligible

Y/N flag to indicate if instrument may be quoted and/or traded at a zero price.

String

contractMonth

For monthly, quarterly and serial instruments identifies the named month and year in format YYYYMM.

For all other instruments, identifies the month, year and date in format YYYYMMDD.

String

valuationMethod

Type of valuation method used

Valid values include but are not limited to:

• EQTY - Premium Style

String

tradeTick

Trade price tick. May differ from the settlementTick.

Double

settlementTick

Used when instruments settle in a smaller tick than they are traded at; this field supports the settlement tick.

Double

variableTickTable

Variable tick table for trading on CME Globex.

String

vttLowTick

For some instruments, the tick is price dependent. This field defines the smallest tick the instrument can trade at.

Double

vttHighTick

For some instruments, the tick is price dependent. This field defines the widest tick the instrument can trade at.

Double

vttPriceThreshold

For some instruments, the tick is price dependent. This field defines the price threshold at which the minimum tick changes.

Double

isUserDefined

UDS instruments (Under Development)

String

uomCcy

Unit of measure currency

String

isSyntheticInstrument

Boolean flag to identify Synthetic instruments ("Y", "N").

String

exchangeClearing

Exchange identifier used in the CME Group Post Trade Application.

String

maxGlobexOrdQty

Maximum value allowed for a single quote or order on CME Globex.

String

minGlobexOrdQty

Minimum order or quote size required on CME Globex.

String

instrumentType

Description of instrument type.

String

globexGroupCode

CME Globex uses this group code to identify logical groupings of products.

CME Globex group code is only populated for instruments listed for trading on CME Globex.

exchangeGlobex

Market Identifier Code (MIC) as defined by the ISO. For inter-exchange spreads, this field contains the hybrid value displayed in the Market Data Platform Security Definition (tag 35=d) message tag 207-SecurityExchange.

bookDepth

Globex market data book depth repeating group.

mdFeedType

Globex market data feed type. Describes a class of service for a given data feed.

• GBX=CME Globex Book Depth

• GBI=CME Globex Implied Book Depth (under development)

clrSymbol

CLR Symbol: The product code used in CME Clearing for clearing reports like the Trade Register.

Example: “L1”

exchBusinessDate

Exchange business date.

• For polls before 4:00 PM CT current exchange business date.

• For polls after 4:00 PM CT this is the exchange next business date.