Short Symbol Summary Message Fields

The Short Symbol Summary message delivers the Cboe consolidated best bid/offer and total executed volume across all applicable Cboe One Options books.

Table 1. Short Symbol Summary

Field	Offset	Length	Value/Type	Description
Length	0	1	Binary	Length of this message including this field.
Message Type	1	1	0xA4	Short Symbol Summary message
Last Update Timestamp	2	8	Binary	Timestamp of the last matching engine message that updated the quote information for this symbol in the Cboe One Options server’s cache. Encoded as the number of nanoseconds since midnight.
Symbol	10	8	Alphanumeric	Symbol right padded with spaces.
Cboe Cumulative Executed Volume	18	4	Binary	Cumulative number of shares traded today across all applicable Cboe books.
Consolidated Best Bid Price	22	4	Binary 4.4 Price	Cboe Consolidated best bid price.
Consolidated Best Bid Quantity	26	4	Binary	Cboe Consolidated number of buy-side shares available for this symbol.
Consolidated Best Ask Price	30	4	Binary 4.4 Price	Cboe Consolidated best ask price.
Consolidated Best Ask Quantity	34	4	Binary	Cboe Consolidated number of sell-side shares available for this symbol.
Reserved	38	5		Reserved
Total Length = 43 bytes