What the company or idea is
Cboe Global Markets is an American financial exchange operator founded in 1973, headquartered in Chicago, operating the largest U.S. options exchange (30% share), third-largest U.S. equities exchange (10%), and largest stock exchange in Europe (25%).
How it actually makes money
Cboe Global Markets makes money by charging fees for trading, listing, data, and market infrastructure services across its U.S. options, U.S. equities, and European stock exchanges.
What works
Its 1973 launch of standardised options created a new asset class and pricing discipline; its acquisitions and rebranding (2017) successfully extended that franchise into European equities and multi-asset infrastructure.
What does not
Its open outcry trading floor in Chicago is an operational anomaly in a fully electronic global market — costly to maintain and disconnected from its dominant electronic revenue streams.
What to take from it
Cboe shows how a single innovation — standardised, exchange-traded stock options — can anchor a decades-long business model even as ownership, branding, and geography expand far beyond its origin.
Is it worth your time
Yes — if you are studying how legacy financial infrastructure scales globally while preserving analog mechanisms like open outcry.