Stock Market Circuit Breaker Levels(주식 시장 차단기 수준)Posted By: Steve Burns Enter your email address and we'll send you a free PDF of this post. Share this: The stock market downside price limits during U.S. trading hours from 8:30 a.m. to 3:00 p.m. central time are successive lower price limits on the S&P 500 index in tiers (층층으로)based on being down over ..