Money Stock market is open for full day of trading New Year’s Eve, but closed Jan. 1 for New Year’s Day December 30, 2018December 30, 2018 Adam Shell, USA TODAY Comments Off on Stock market is open for full day of trading New Year’s Eve, but closed Jan. 1 for New Year’s Day The stock market will be open for a full day of trading on New Year's Eve, Monday, Dec. 31, but closed for New Year's Day on Tuesday, Jan. 1.