・Stock market circuit breakers halt trading when the S&P 500 drops 7%, 13%, or 20% in a single day. ・These halts aim to reduce panic selling and allow time to process news and orders. ・While rarely ...

Peter Gratton, Ph.D., is a New Orleans-based editor and professor with over 20 years of experience in investing, risk management, and public policy. Peter began covering markets at Multex (Reuters) ...