Two Side Update Expanded (Short) Message Fields

Table 1. Two Side Update Expanded (Short)
Field NameOffsetLengthType/(Value)Description
Length01BinaryLength of this message including this field.
Message Type110xD6 Two Side Update Expanded (Short) Message
Time Offset24Time OffsetNanosecond offset from last unit timestamp.
Complex Instrument ID66Printable ASCIIComplex Instrument Id right padded with spaces.
Bit Fields121Bit Field
  • Bits 0-7 - Reserved
  • There are no Bit Fields for Complex Multicast TOP.
Bid Price132Binary Short PriceBid Price (may be a zero or negative price for some instruments).
Bid Quantity152BinaryTotal number of contracts on the inside bid (customer and non-customer). A zero value denotes there is no bid.
Bid Customer Quantity172BinaryNumber of customer contracts on the inside bid. A zero value denotes that there are no customer contracts at the inside price.
Ask Price192Binary Short PriceAsk Price (may be a zero or negative price for some instruments).
Ask Quantity212BinaryTotal number of contracts on the inside ask (customer and non-customer). A zero value denotes there is no ask.
Ask Customer Quantity232BinaryNumber of customer contracts on the inside ask. A zero value denotes that there are no customer contracts at the inside price.
Total Length=25 bytes
Cboe Titanium U.S. Options Complex Multicast TOP Specification - Two Side Update Expanded (Short) | Cboe