Circuit breaker levels for the NYSE:
Circuit-breaker points represent the thresholds at which trading is halted marketwide for single-day declines in the Dow Jones Industrial Average (DJIA). Circuit-breaker levels are set quarterly as 10, 20 and 30-percent of the DJIA average closing values of the previous month, rounded to the nearest 50 points.
In fourth-quarter 2008, the 10, 20 and 30-percent decline levels, respectively, in the DJIA will be as follows:
Level 1 Halt
A 1,100-point drop in the DJIA before 2 p.m. will halt trading for one hour; for 30 minutes if between 2 p.m. and 2:30 p.m.; and have no effect if at 2:30 p.m. or later unless there is a level 2 halt.
Level 2 Halt
A 2,200-point drop in the DJIA before 1:00 p.m. will halt trading for two hours; for one hour if between 1:00 p.m. and 2:00 p.m.; and for the remainder of the day if at 2:00 p.m. or later.
Level 3 Halt
A 3,350-point drop will halt trading for the remainder of the day regardless of when the decline occurs.