Except for a few options contracts, virtually all trading of CME futures is now conducted electronically via computers. However, It seems to us that open outcry trading allowed a better feel about markets.

We have commented before on the passing of open outcry trading of the CME Group’s futures contracts. Those pits on the cavernous trading floor of the Chicago Board of Trade Building were closed for good on 6 July 2015. Except for a few options contracts, virtually all trading of CME futures is now conducted electronically via computers – so-called black boxes. Futures traders dispatch their orders in this manner to the CME’s supercomputer Globex platform where they are matched up with opposite orders from other trader...