When you plug something in at home, you expect the receptacle (aka outlet) to have power. If it doesn’t, you probably know to check and reset the circuit breaker. But what if the breaker didn’t trip?

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) ...

Forbes contributors publish independent expert analyses and insights. I show you how to save and invest. With the recent market volatility, a reminder on how circuit breakers work may be timely.

But many investors and others may not know what the market circuit breaker is and why it is so important. What is a market circuit breaker? How does a circuit breaker work? What are single-stock ...

NEW YORK (Reuters) - A plunge in U.S. markets on Monday triggered a 15-minute trading halt in stocks after the S&P 500 fell 7% shortly after the market opened. The declines came as tumbling oil prices ...

Forbes contributors publish independent expert analyses and insights. I show you how to save and invest. In 1987 the markets fell over 20% in a single day. Separately, in 1989 the markets had a 6% one ...

Six minutes after trading began on the New York Stock Exchange on Monday, it was suddenly halted. That's when the S&P 500 index had plummeted 7% and marketwide circuit breakers kicked in. Trading ...