Indexes

Message Layouts
PreTrade

Message

TopOfBook (i)

ID9938

Used to update the level 1 service following any change to the consolidated Best Bid and Offer.

Field
Name
Type
Req'd
Comments
Pedigree
83
Y

Length of message including this field.

90
Y

0x69=TOB

185
Y

Time the message was generated.

70
Y

GTP Instrument identifier.

171
Y

Venue from which market data is received for the instrument.

Please refer to the Additional Field Values section for valid values.

22
Y

Aggregated size of all bid market orders. Value will be 0 if there are no market orders.

20
Y

Price of the best buy limit order. The Implied Bid Price for an instrument only traded on yield.

23
Y

Yield of the best buy Limit order.

21
Y

Aggregated size of all orders at the best buy limit price.

115
Y

Aggregated size of all offer market orders. Value will be 0 if there are no market orders.

113
Y

Price of the best sell limit order. Implied Offer Price for an instrument only traded on yield.

116
Y

Yield of the best offer Limit order.

114
Y

Aggregated size of all orders at the best sell limit price.

123
Y

Please refer to the Additional Field Values section for valid values.

Y

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