Chicago big two lead US exchange valuation growth

In the two years since Chicago Mercantile Exchange (CME) became a listed company both it and its cross-town compatriot, Chicago Board of Trade (CBoT), have seen their valuations grow at a quicker rate than other US exchanges such as New York Mercantile Exchange (Nymex). The high degree of correlation between the growth rates of CME and CBoT reflects the widespread expectation that CBoT will go for a public listing next year.

An exchange spokesperson declined to comment on reports that meetings have been held with investment banks...