Ditching the Dow Jones Industrial Average, the New York Stock Exchange said this week that come February its circuit breakers will be based solely on the broader S&P 500. The circuit breaker ...

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) ...

This is the first of a two-part series on the processes used to find the short circuit current duties of circuit breakers and fuses. In Part 1, we’ll use a simplified power system to illustrate the ...