Here's what to know about so-called “circuit breakers" and when they're used to halt trading on stock markets.

Stocks fell sharply again Thursday, with declines nearing levels that would trigger a marketwide trading halt. These are the ...

The US stock market had a choppy first hour on Thursday with Dow Jones falling as much as 2,150 points, the S&P 500 and the ...

Stocks were giving back the bulk of Wednesday's epic bounce as volatility on Wall Street continued despite President Donald Trump's partial climbdown on tariff rates. The steep selloff was again ...