Stock exchanges using open outcry

Question

There is often discussion about efficiency of different trading systems. Is there some stock exchange using open outcry trading as of today?

Answer 1

As Chris pointed out in his comment, smaller stock exchanges may use open outcry. There are several exchanges that use open outcry/floor trading in the US, however, although they aren't necessarily stock exchanges.

1. The NYSE still has a trading floor where some high-priced stocks are traded, according to WP.
2. There are several futures/options exchanges in Chicago that still use these methods, like the Chicago Mercantile Exchange, the Chicago Board of Trade, and the Chicago Board Options Exchange.

Having visited the three Chicago exchanges I mentioned, I can personally vouch for their continued use of a trading floor, although its use is declining in all three.