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Security Definition Request (Options Only)

A Security Definition Request message is used to request that the system create a complex strategy. The resulting symbol (if accepted by the system) will be returned in a Security Definition message with the Cboe symbol in Symbol (55). Complex instruments must contain a minimum of 2 and a maximum of 16 legs. Creating new complex strategies is allowed for Options on Futures only.

TagField NameReq’dDescription
35Standard Message HeaderYMsgType= c
97PossResendN
  • N = (Default) indicates a new order.
  • Y = Indicates an application level resend and is NOT SUPPORTED.
  • For reasons of economy, Cboe does not track in primary storage the ClOrdID values of orders that are no longer live.
  • For reasons of performance, Cboe does not access secondary storage to enforce unique ClOrdID values against orders that are no longer live.
  • Without full duplicate ClOrdID value enforcement, it is not possible to safely implement the full behavior specified in the FIX 4.2 Protocol for PossResend= Y .
  • To remain economical, fast, and safe, all messages with PossResend= Y will be ignored.
11ClOrdIdY
  • ID chosen by client. 20 characters or less. Characters in ASCII range 33-126 are allowed, except for comma, semicolon, and pipe.
  • A leading tilde (~) cannot be sent on any ClOrdId and will result in a reject. These are reserved for internal use by Cboe and could be received as a result of a system-generated ClOrdId.
  • If the ClOrdId matches a live order it will be rejected as duplicate (unless PossResend= Y , see above).
  • Note: Cboe only enforces the uniqueness of ClOrdID values among currently live orders, which includes long-lived, persisting GTC/GTD orders. However it is strongly recommended users maintain unique ClOrdID values.
60TransactTimeYTime request initiated/released. Required by FIX 4.2.
167SecurityTypeY
  • Indicates the type of security
  • MLO = Multi-leg/Spread instrument
  • 555
  • Repeating Group
NoLegsYThe number of legs in this complex instrument. Must be a minimum of 2 legs and a maximum of 16 legs.
➔654LegRefIDY
  • Required tag to start each repeated group.
  • Leg ID chosen by client. Five alphanumeric or space characters or less.
➔600LegSymbolYThe symbol id of for the simple Options on Futures instrument.
➔623LegRatioQtyY
  • Ratio of number of contracts in this leg per order quantity. All legs must be reduced (i.e., 2:2 must be sent as 1:1) in order to be accepted by the system when using this message type.
  • Accepted values are 1 - 99,999.
➔624LegSideY
  • 1 = Buy
  • 2 = Sell
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Cboe Titanium Cboe Futures Exchange FIX Specification - Security Definition Request (Options Only) | Cboe