The original Chicago Board of Trade Building opens for business.

The Chicago Board of Trade Building is a 44-story, 604-foot (184 m) Art Deco skyscraper located in the Chicago Loop, standing at the foot of the LaSalle Street "canyon". Built in 1930 for the Chicago Board of Trade (CBOT), it has served as the primary trading venue of the CBOT and later the CME Group, formed in 2007 by the merger of the CBOT and the Chicago Mercantile Exchange. In 2012, the CME Group sold the CBOT Building to a consortium of real estate investors, including GlenStar Properties LLC and USAA Real Estate Company.