The close of a trading day indicates the end of the official designated trading time in an exchange. The New York Stock Exchange (NYSE) close of a trading day is iconically signaled by ringing a bell on the trading floor, and is a popular example when describing a market trading session close. Different exchanges have different hours of trading sessions depending on the location and type of market. Stock trading on the NYSE is open from 9:30 AM to 4:00 PM local time in the eastern United States from Monday through Friday, with bond trading open from 8:00 AM to 5:00 PM. Each exchange is closed for specific market holidays such as New Year’s Day, and information about closures can be found on their website.
