Trading gets suspended at around -800 (down 5%)?
Under the revised rules approved by the SEC in 2012, market-wide circuit breakers kick in when the S&P 500 Index drops 7 percent (Level 1), 13 percent (Level 2), and 20 percent (Level 3) from the prior day’s close.
A market decline that triggers a Level 1 or Level 2 circuit breaker before 3:25 p.m. will halt market-wide trading for 15 minutes, while a similar market decline “at or after” 3:25 p.m. will not halt market-wide trading.
For 1st Quarter 2016, the market-wide circuit breaker levels are:
Level 1 = 1,850.94
Level 2 = 1,731.52
Level 3 = 1,592.20