Width Update Message Fields (Options Only)
The Width Update message is used to communicate the quote width multiplier for opening collars and for maximum quote width requirements. This message is sent whenever the exchange changes the multiplier intraday on a per-underlying basis. For complete details on the opening collars, see the Cboe Titanium U.S. Options Opening Process.
| Field Name | Offset | Length | Type/(Value) | Description |
|---|---|---|---|---|
| Length | 0 | 1 | Binary | Length of this message including this field. |
| Message Type | 1 | 1 | 0xD2 | Width Update Message |
| Time Offset | 2 | 4 | Time Offset | Nanosecond offset from last unit timestamp. |
| Underlying | 6 | 8 | Printable ASCII | Underlying right padded with spaces. |
| Width Type | 14 | 1 | Alphanumeric |
|
| Multiplier | 15 | 4 | Multiplier | Width multiplier. |
| Total Length=19 bytes | ||||