Chicago Stock Exchange
- Trades over 4000 stock issues. Features listed companies, membership information, exchange traded funds, career opportunities, publications, OTC issues and history.
- http://www.chx.com/

CME - Chicago Mercantile Exchange
- Trades futures and options on currencies, interest rates, stock indexes and agricultural commodities.
- http://www.cme.com/

CBOE - Chicago Board Options Exchange
- Largest options market trades index, equity, interest rate options.
- http://www.cboe.com/

CBOT - Chicago Board of Trade
- A future and commodities commodies exchange that trades agricultural, interest rate, and equities options and futures.
- http://www.cbot.com/

CCX - Chicago Climate Exchange
- Greenhouse gas emissions trading exchange; designed for voluntary emissions reductions and trading for all six greenhouse gases. Information on initial propositions, benefits, news and press releases and contacts.
- http://www.chicagoclimatex.com/