Velocity logic pauses matching in a futures contract for a few seconds when its price moves by more than a set number of ticks within a set short time; during the pause orders may be entered, modified and cancelled, and matching resumes with an auction.
| mechanism | fall (ticks) | halted (s) | seller’s fills | seller’s cost (ticks) |
|---|---|---|---|---|
| none | 27.4 | 0 | 17 580 | 12.2 |
| dynamic band and pause | 20.0 | 0 | 16 440 | 9.6 |
| velocity logic | 24.9 | 79 | 11 752 | 13.2 |
| market-wide halt | 18.9 | 48 | 9 279 | 6.6 |
mx_halts.mechanisms_study.mx_halts.example.