The New York Stock Exchange, the American Stock Exchange, the Nasdaq Stock Market (NASDAQ:NDAQ), the Chicago Board Options Exchange and the CBOE Futures Exchange will be closed to honor Ford, who died Tuesday at his California home at age 93.

U.S. President George W. Bush declared Tuesday a national day of mourning for Ford, with all federal offices closed.

The Chicago Mercantile Exchange (NYSE:CME) will close commodity and equity-index markets but keep open foreign-exchange and interest-rate markets until 1 p.m. EST.

The Chicago Board of Trade's open-auction agricultural, equity-index and metals trading will be closed, as will its Dow Jones AIG Index. Most other products will close at 1 p.m. EST. Electronic trading for most products will remain open.

The stock-and-bond trade group Securities Industry and Financial Markets Association plans a 2 p.m. EST closing for bond trading so the weekly Treasury auction of short-term bills -- already pushed back a day because of the New Year's holiday -- could proceed Tuesday.

The Federal Reserve Board will also be closed Tuesday but the 12 regional Reserve Banks will be open.