Market operators are entities responsible for managing and overseeing the trading of financial instruments in various markets. They ensure that transactions are conducted fairly and efficiently, providing a platform for buyers and sellers to interact. Market operators can include stock exchanges, commodity markets, and other trading venues. These operators play a crucial role in maintaining market integrity by enforcing rules and regulations. They also provide essential services such as trade execution, clearing, and settlement, which help facilitate smooth operations. Examples of market operators include the New York Stock Exchange and the Chicago Mercantile Exchange.