Trading Status Message Fields
The Trading Status message is used to indicate the current trading status of a complex instrument. A Trading Status message will be sent whenever a complex instrument trading status changes. A Trading Status message will be sent for all complex instruments as they transition through various trading states. The following summarizes the Trading Status values in the Cboe system:
H=Halt state.
L=Curb Trading. Sent when symbol transitions to trading in the Curb session (C1 only). Cboe will send a Trading Status of L as Curb-eligible Products transition from RTH trading to Curb trading.
Q=Queuing. Sent starting at 7:30 a.m. ET once complex orders can be accepted for queuing in preparation for the RTH open.
T=RTH Trading. Sent as complex instruments are open for trading.
A Trading Status message will also be sent:
- for a Regulatory Halt Quoting period in any complex instrument where the underlying has experienced a Regulatory Halt as well as the Trading resumption for the same instrument.
The Trading Status field will be used to represent the status of the RTH and Curb sessions. RTH and Curb times vary by product and trading day. See Hours & Holidays. The GTH Trading Status field will be used to represent the status of series that trade during the GTH session.
| Field Name | Offset | Length | Type/(Value) | Description |
|---|---|---|---|---|
| Length | 0 | 1 | Binary | Length of this message including this field |
| Message Type | 1 | 1 | 0x31 | Trading Status message |
| Time Offset | 2 | 4 | Time Offset | Nanosecond offset from last unit timestamp |
| Complex Instrument ID | 6 | 6 | Printable ASCII | Complex Instrument Id right padded with spaces. |
| Reserved | 12 | 2 | Reserved | Reserved |
| Trading Status | 14 | 1 | Alpha |
|
| Reserved | 15 | 1 | Reserved | Reserved |
| 16 | 1 | Alpha |
|
| Reserved2 | 17 | 1 | Alpha | Reserved |
| Total Length=18 bytes | ||||