Opening Auction Contingency Matrix

Cboe plans to take the following actions if a matching engine failure occurs prior to the Opening Auction. Normal matching engine fail over occurs in approximately 45 seconds.

Table 1. Opening Auction Contingency Matrix
Time of Matching Engine RecoveryResult
Prior to 9:28 a.m. ET (opening cutoff)Opening Auction occurs as scheduled at 9:30 a.m. ET
Between 9:28 a.m. and 9:30 a.m. ETOpening Auction occurs as scheduled at 9:30 a.m. ET
After 9:30 a.m. ETNo Opening Auction is performed.
Cboe Titanium U.S. Equities Auction Process - Opening Auction Contingency Matrix | Cboe