nyse holiday closings 2011

Under normal circumstances, the New York Stock Exchange (NYSE) is open from Monday through Friday 9:30 a.m. to 4:00 p.m. ET. It closes for official U.S. holidays; most U.S. exchanges follow the NYSE's schedule.
The NYSE will also close for special occasions or emergencies.

Notes on the Schedule

• New Years' Day (January 1) in 2011 falls on a Saturday.The rules of the applicable exchanges state that when a holiday falls on a Saturday, we observe the preceding Friday unless the Friday is the end of a monthly or yearly accounting period. In this case, Friday, December 31, 2010 is the end of both a monthly and yearly accounting period; therefore the exchanges will be open that day and the following Monday.