Chicago Board of Trade Building percent of available space, while financial and trading concerns occupy 54 percent of the three-building complex. In addition to Ceres Cafe on the first floor of the lobby, other businesses provide banking, insurance, travel services, beauty services, and healthcare. Some business have been in the building for over 40 years, and throughout its history, commodities speculators, such as "Prince of the Pit" Richard Dennis, have maintained offices in the building. In 2007, the U.S. Futures Exchange, a competitor of the CBOT formerly known as Eurex US, announced a move from the Sears Tower into the 14th floor of the CBOT
Metropolitan Tower (Chicago) of this ornament, the building is sometimes referred to as the "Beehive Building." Just beneath the beehive are four carillon bells ranging in weight from 1,500 to 7,000 pounds, unused for many years until restored in 1979 for the Chicago visit of Pope John Paul II. At one time, the bells chimed the well-known Cambridge Quarters on the quarter-hours. The base has been altered from its original design: rectangular window openings replaced giant arches on Michigan Avenue and Jackson Boulevard. At one time, the thirtieth floor was the Straus Tower Observatory, which was open to the public for viewing the