Trading on the New York Stock Exchange was halted briefly Monday morning when the S&P 500 index fell 7%. Here's how these automatic circuit... Six minutes after trading began on the New York Stock ...

High voltage is not something we usually tinker with at home. In fact, most of us are more comfortable working with non-lethal, low current, low voltage DC signals. When we do venture into the world ...

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 ...

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 ...

The Dow plunged 1,089 points Monday on the open, prompting investors to ask us, "Will the stock market shut down today?" You see, if markets fall far enough, circuit breakers kick in and halt trading.