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CME Smart Stream Websockets - Statistics

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Contents

Output - Statistics

Fields

RefFieldNameData TypeValuesUsageDescription
1header
2→ messageTypeMessage Typestring
  • STAT (Trade Statistics)
ALWAYS

Denotes trade summary message.

3→ sentTimeSent Timestamptimestamp
ALWAYS

CME MDP gateway sends the message (UTC).

4sequenceNumbersequence Numberstring
ALWAYSSystem generated per session. Message sequence will increment upwards as messages are published. Gaps in the sequence number may indicate that client applications are dropping messages due to slow consumption rates.
5→ versionAPI Versionstring
  • 1.0 (1.0)
ALWAYS
6payload
7→ instrument
8→ → definitionSourceInstrument Definition Sourcestring
  • E (Exchange Defined)
  • U (User Defined)
ALWAYS

Identifies user-defined instruments. If the tag is not present, the instrument is not user-defined.

9→ → exchangeMicExchange MICstring
  • DUMX (Gulf Mercantile Exchange)
  • XCBT (Chicago Board of Trade)
  • XCEC (COMEX (Commodities Exchange Center))
  • XCME (Chicago Mercantile Exchange)
  • XNYM (New York Mercantile Exchange)
ALWAYS

Exchange used to identify a security.

10→ → idInstrument IDstring
ALWAYS

Unique instrument ID as qualified by the exchange per market segment. The unique instrument ID value will not be reused until the next trade date following an instrument expiration or deletion.

11→ → marketSegmentIdMarket Segment IDstring
ALWAYS

Identifies the market segment. Populated for all CME Globex instruments.

12→ → periodCodeInstrument Period Codestring
ALWAYS

This field provides the calendar month reflected in the instrument symbol. Format YYYYMM (e.g., 201912) 

For futures spreads, this field contains the first leg's calendar month reflected in the instrument symbol.

13→ → productCodeInstrument Product Codestring
ALWAYS

String field that indicates the underlying asset code (Product Code). Example: GE (Eurodollars), ES (E-Minis).

14→ → productGroupProduct Group Codestring
ALWAYS
15→ → productTypeProduct Typestring
  • FUT (Future)
  • OOF (Option)
  • OPT (Option)
ALWAYS
16→ → symbolInstrument Symbolstring
ALWAYS
17→ lastUpdateTimeLast Update Timestamptimestamp
ALWAYS
18→ tradeStatistics
19→ → clearedVolumeOpen Interest Quantityint32
OPTIONAL
20→ → clearedVolumeDateSettlement Price Datestring
OPTIONAL
21→ → clearedVolumeTimestampSettlement Price Timestampint32
OPTIONAL
22→ → openInterestOpen Interest Quantityint32
OPTIONAL
23→ → openInterestDateSettlement Price Datestring
OPTIONAL
24→ → openInterestTimestampSettlement Price Timestampint32
OPTIONAL
25→ → settlementActualSettlement Actual Indicatorboolean
OPTIONAL
26→ → settlementFinalSettlement Final Indicatorboolean
OPTIONAL
27→ → settlementPriceSettlement Pricedouble
OPTIONAL
28→ → settlementPriceDateSettlement Price Datestring
OPTIONAL
29→ → settlementPriceTimestampSettlement Price Timestamptimestamp
OPTIONAL
30→ → settlementRoundedSettlement Rounded Indicatorboolean
OPTIONAL
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