I work for a mutual fund company and I would love to have a 4 day weekend. We have closed for every president since Ulysse's S Grant in 1885. I included the NYSE holiday rules listed below to those who are interested. Dealings upon the Exchange (Rules 51â56) Rule 51. Hours for Business Except as may be otherwise determined by the Board of Directors as to particular days, the Exchange shall be open for the transaction of business on every business day, excluding Saturdays, (a) for a 9:30 a.m. to 4:00 p.m. trading session and (b) for the purposes of "Off-Hours Trading" (as Rule 900 (Off-Hours Trading: Applicability and Definitions) defines that term), during such hours as the Exchange may from time to time specify. Except as may be otherwise determined by the Exchange Board of Directors, the Chief Executive Officer of the Exchange shall have the power to halt or suspend trading in some or all securities traded on the Exchange, to close some or all Exchange facilities, and to determine the duration of any such halt, suspension or closing, when he deems such action to be necessary or appropriate for the maintenance of a fair and orderly market or the protection of investors, or otherwise in the public interest, due to extraordinary circumstances, such as (1) actual or threatened physical danger, severe climatic conditions, civil unrest, terrorism, acts of war, or loss or interruption of facilities utilized by the Exchange, or (2) a request by a governmental agency or official, or (3) a period of mourning or recognition for a person or event. In considering such action, the Chief Executive Officer of the Exchange shall consult with such available Executive Floor Governors as he deems appropriate under the circumstances. The Chief Executive Officer of the Exchange shall notify the Exchange Board of actions taken pursuant to this Rule, except for a period of mourning or recognition for a person or event, as soon thereafter as is feasible. ⢠⢠⢠Supplementary Material: ------------------ .10 Holidays.âThe Board has determined that the Exchange will not be open for business on 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. Martin Luther King, Jr. Day, Washington's Birthday and Memorial Day will be celebrated on the third Monday in January, the third Monday in February and the last Monday in May, respectively The Exchange Board has also determined that, when any holiday observed by the Exchange falls on a Saturday, the Exchange will not be open for business on the preceding Friday and when any holiday observed by the Exchange falls on a Sunday, the Exchange will not be open for business on the succeeding Monday, unless unusual business conditions exist, such as the ending of a monthly or the yearly accounting period. ------------------ Adopted: September 12, 1974; effective October 1, 1974; October 15, 1970; effective January 1, 1971. Amended: March 19, 1964; March 1, 1973; September 30, 1985; May 24, 1991; July 7, 1997; February 4, 1998; February 12, 2002( SR-NYSE-2001-55 ); March 1, 2004 (SR-NYSE-2004-02); February 27, 2006, effective March 8, 2006 (NYSE-2005-77).