BAT (British American Tobacco) is one of the largest companies of its kind in the world, and its headquarters are located in, you guessed it, London. Their brands include Lucky Strike. Kent, and Dunhill. Chicago Trading Company Chicago Trading Company (CTC) is a proprietary market making firm and is recognized internationally as a leading provider of pricing and liquidity on all U.S. derivatives exchanges. (Chicago, New York, London) Chicago-WTS Chicago-WTS is a proprietary trading group based in Chicago, A trading company is a business that works with different kinds of products sold for consumer, business purposes. In contemporary times, trading companies buy a specialized range of products, shopkeeper them, and coordinate delivery of products to customers. Trading companies may connect buyers and sellers, but not partake in the ownership or storage of goods, earning their revenue through sales commissions. They may also be structured to engage in commerce with foreign countries or territories.