Utilize the input text as a context reference, choose the right relationship between Stock Market and Stock Exchange from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

A Bloomberg report on Wednesday said the investors believed the New York Stock Exchange ICE, +1.15% , Nasdaq Stock Market NDAQ, +3.24% and venues operated by Bats Global Markets Inc. had violated the law by enabling high-frequency firms to exploit ordinary investors trading on the exchanges in return for which the firms directed their “considerable” trading activity to them.

Answer: operator