Trading day


In business, the trading day or regular trading hours is the time span that a particular stock exchange is open. For example, the New York Stock Exchange is, as of 2020, open from 9:30 AM Eastern Time to 4:00 PM Eastern Time. Trading days are usually Monday to Friday. When a trading day ends, all share trading ends and is frozen in time until the next trading day begins. There are several other special circumstances which would lead to a shortened trading day, or no trading day at all, such as on holidays or on days when a state funeral of a head of state is scheduled to take place.
The NYSE and NASDAQ average about 253 trading days a year. This is from 365.25 * 5/7 - 6 - 3*5/7 = 252.75 ≈ 253. The holidays where the stock exchange is closed are New Year's Day, Martin Luther King Jr. Day, Washington's Birthday, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day, and Christmas Day; there are also some holidays where trading is permitted, including Columbus Day, Veterans Day, and New Year's Eve. Up to three trading days are shortened, i.e. the exchanges are open from 9:30AM–1:00PM, depending on where they fall in the calendar year.

Trading day calendar

2016

There are exactly 252 trading days in 2016. January has the fewest, and August the most, with an average of 21 per month, or 63 per quarter.
Out of a possible 366 days, 105 days are weekend days when the stock exchanges are closed. Eight of the nine holidays which close the exchanges fall on weekdays, with Christmas being observed on Monday, December 26. There is one shortened trading session on Friday, November 25.

2017

There are exactly 251 trading days in 2017. February and April have the fewest, and March and August the most, with an average of 20.9 per month, or 62.8 per quarter.
Out of a possible 365 days, 105 days are weekend days when the stock exchanges are closed. Eight of the nine holidays which close the exchanges fall on weekdays, with New Year's Day being observed on Monday, January 2. There are two shortened trading sessions: on Monday, July 3, and on Friday, November 24.

2018

There are exactly 252 trading days in 2018. February and September have the fewest, and August the most, with an average of 21 per month, or 63 per quarter.
Out of a possible 365 days, 104 days are weekend days when the stock exchanges are closed. All nine holidays which close the exchanges fall on weekdays. There are three shortened trading sessions: on Tuesday, July 3, on Friday, November 23, and on Monday, December 24,.
On December 5, 2018, all trading activities were canceled due to the state funeral of George H. W. Bush.

2019

There are exactly 252 trading days in 2019. February has the fewest, and October the most, with an average of 21 per month, or 63 per quarter.
Out of a possible 365 days, 104 days are weekend days when the stock exchanges are closed. All nine holidays which close the exchanges fall on weekdays. There are three shortened trading sessions: on Wednesday, July 3, on Friday, November 29, and on Tuesday, December 24.

2020

There are exactly 253 trading days in 2020. February has the fewest, and March, June, July, October and December the most, with an average of 21 per month, or 63 per quarter.
Out of a possible 366 days, 104 days are weekend days when the stock exchanges are closed. Eight of the nine holidays which close the exchanges fall on weekdays, with Independence Day being observed on Friday, July 3. There are two shortened trading sessions: on Friday, November 27, and on Thursday, December 24.

Trading day time zones

Each stock exchange has opening hours that are based on specific time zones. People can trade in these exchanges remotely using electronic trading platforms. For those trading in different parts of the world, there are unique trading days based on the hours associated with any given time zone. For example, NASDAQ is open 9:30-16:00 ET and anyone outside of the Eastern Time Zone will have a different trading day. During the part of the year when North America is on standard time, in it would be 17:30-24:00 in Moscow, and in Shanghai it would be 22:30-5:00. Remote traders should find their trading hours based on the stock exchange's hours and time zone.