When is the NASDAQ open?

The NASDAQ is open for trade every single day of the year except weekends and United States national public holidays. Within those days, it has a pre-market session between 7:00 and 9:30 EST, a normal trading session between 9:30 and 16:00 EST, and a post-market session between 16:00 and 20:00 EST. The stock exchange was founded on February 4th 1971 and is located in New York City.