Trade Message Fields

Trade messages are sent when an order is executed in whole or in part on a Cboe exchange.

Table 1. Trade
Field	Offset	Length	Value/Type	Description
Length	0	1	Binary	Length of this message including this field.
Message Type	1	1	0xA9	Trade message
Transaction Time	2	8	Binary	The time the trade occurred on the specified Market Center. Encoded as the number of nanoseconds since midnight.
Symbol	10	8	Alphanumeric	Symbol right padded with spaces.
Market Center	18	1	Alphanumeric	Market Center on which the last trade was executed: B = C1 W = C2 X = EDGX Z = BZX
Market Center Execution ID	19	8	Binary	Market center specific execution identifier of this Execution. Execution ID is also referenced in the Trade Break message.
Last Price	27	8	Binary 8.4 Price	Last trade price.
Last Quantity	35	8	Binary	Last trade quantity.
Cboe Cumulative Executed Volume	43	8	Binary	Cumulative number of shares traded today across all applicable books.
Trade Condition	51	1	Alphanumeric	See Options Trade Condition Codes for details.
Reserved	52	8		Reserved
Total Length = 60 bytes