CME Group Inc., together with its subsidiaries, operates contract markets for the trading of futures and options on futures contracts worldwide. It offers futures and options products based on interest rates, equity indexes, foreign exchange, agricultural commodities, energy, and metals, as well as fixed income and foreign currency trading services. The company also provides clearing house services, including clearing, settling, and guaranteeing futures and options contracts, and cleared swaps products traded through its exchanges; and trade processing and risk mitigation services. In addition, the company offers a range of market data services, including real-time and historical data services. It serves professional traders, financial institutions, institutional and individual investors, corporations, manufacturers, producers, governments, and central banks. The company was formerly known as Chicago Mercantile Exchange Holdings Inc. and changed its name to CME Group Inc. in July 2007. The company was founded in 1898 and is headquartered in Chicago, Illinois.

Nasdaq, Inc. operates as a technology company that serves capital markets and other industries worldwide. It operates in three segments: Capital Access Platforms, Financial Technology, and Market Services. The Capital Access Platforms segment sells and distributes historical and real-time market data; and develops and licenses Nasdaq-branded indices and financial products. This segment also offers investor relations intelligence, governance solutions, and ESG solutions; and insights and workflow solutions, as well as operates listing platforms. The Financial Technology segment offers Verafin, a cloud-based platform to detect, investigate, and report money laundering and financial frauds; surveillance solutions, including a SaaS platform to assist in complying with market rules, regulations, and internal market surveillance policies; AxiomSL, a risk data management and regulatory reporting solution; and Calypso, a front-to-back trading technology solution for the financial market. This segment also handles assets, comprising cash equities, equity derivatives, currencies, various interest-bearing securities, commodities, energy products, and digital currencies; and trade management and colocation services. The Market Platforms segment offers equity derivative trading and clearing, cash equity trading, fixed income and commodities trading and clearing, and currency trading services. This segment operates various exchanges and other marketplace facilities across various asset classes which includes derivatives, commodities, cash equity, debt, structured products, and exchange traded products; and provides clearing, settlement, and central depository services. The company was formerly known as The NASDAQ OMX Group, Inc. and changed its name to Nasdaq, Inc. in September 2015. Nasdaq, Inc. was founded in 1971 and is headquartered in New York, New York.

Equifax Inc. operates as a data, analytics, and technology company. The company operates through three segments: Workforce Solutions, U.S. Information Solutions (USIS), and International. The Workforce Solutions segment offers services that enables customers to verify income, employment, educational history, criminal justice data, healthcare professional licensure, and sanctions of people in the United States; and employer customers with services that assist them in complying with and automating payroll-related and human resource management processes throughout the entire cycle of the employment relationship. The USIS segment provides consumer and commercial information services, such as credit information and credit scoring, credit modeling and portfolio analytics, locate, fraud detection and prevention, identity verification, and other consulting services; mortgage services; financial marketing services; identity management services; and credit monitoring products. The International segment offers information service products, which include consumer and commercial services, such as credit and financial information, and credit scoring and modeling; and credit and other marketing products and services, as well as offers information, technology, and other services to support debt collections and recovery management. The company serves customers in financial services, mortgage, retail, telecommunications, utilities, automotive, brokerage, healthcare, and insurance industries, as well as government agencies. It operates in Argentina, Australia, Brazil, Canada, Chile, Costa Rica, Dominican Republic, Ecuador, El Salvador, Honduras, India, Ireland, Mexico, New Zealand, Paraguay, Peru, Portugal, Spain, the United Kingdom, Uruguay, and the United States. The company was founded in 1899 and is headquartered in Atlanta, Georgia.

Interactive Brokers Group, Inc. operates as an automated electronic broker worldwide. The company engages in the execution, clearance, and settlement of trades in stocks, options, futures, foreign exchange instruments, bonds, mutual funds, exchange traded funds (ETFs), precious metals, and cryptocurrencies. It also custodies and services accounts for hedge and mutual funds, ETFs, registered investment advisors, proprietary trading groups, introducing brokers, and individual investors. In addition, the company offers custody, prime brokerage, securities, and margin lending services. It serves institutional and individual customers through electronic exchanges and market centers. The company was founded in 1977 and is headquartered in Greenwich, Connecticut.

Tradeweb Markets Inc., together with its subsidiaries, builds and operates electronic marketplaces worldwide. The company's marketplaces facilitate trading in a range of asset classes, including rates, credit, money markets, and equities. It offers pre-trade data and analytics, trade execution, and trade processing, as well as post-trade data, analytics, and reporting services. The company provides flexible order and trading systems to institutional investors. It also offers a range of electronic, voice, and hybrid platforms to dealers and financial institutions on electronic or hybrid markets with Dealerweb platform; and trading solutions for financial advisory firms and traders with Tradeweb Direct platform. The company serves in the institutional, wholesale, and retail client sectors. Its customers include asset managers, hedge funds, insurance companies, central banks, banks and dealers, proprietary trading firms, retail brokerage and financial advisory firms, and regional dealers. The company was founded in 1996 and is headquartered in New York, New York. Tradeweb Markets Inc. operates as a subsidiary of Refinitiv Parent Limited.

MarketAxess Holdings Inc., together with its subsidiaries, operates an electronic trading platform for institutional investor and broker-dealer companies worldwide. The company offers trading technology that provides liquidity access in U.S. high-grade bonds, U.S. high-yield bonds, emerging market debt, eurobonds, municipal bonds, U.S. government bonds, and other fixed-income securities; and executes bond trades between and among institutional investor and broker-dealer clients in an all-to-all anonymous trading environment for corporate bonds through its Open Trading protocols. It also provides trading-related products and services, including composite+ pricing and other market data products to assist clients with trading decisions; auto-execution and other execution services for clients requiring specialized workflow solutions; connectivity solutions that facilitate straight-through processing; and technology services to optimize trading environments. In addition, the company offers various pre-and post-trade services, such as trade matching, trade publication, regulatory transaction reporting, and market and reference data across a range of fixed-income and other products. MarketAxess Holdings Inc. was incorporated in 2000 and is headquartered in New York, New York.

Virtu Financial, Inc. operates as a financial services company in the United States, Asia Pacific, Canada, EMEA, Ireland, and internationally. The company operates through two segments, Market Making and Execution Services. Its product includes offerings in execution, liquidity sourcing, analytics and broker-neutral, capital markets, and multi-dealer platforms in workflow technology. The company's product allow its clients to trade on various venues across 50 countries and in various asset classes, including global equities, ETFs, options, foreign exchange, futures, fixed income, cryptocurrencies, and myriad other commodities. Its multi-asset analytics platform provides a range of pre- and post-trade services, data products, and compliance tools for clients to invest, trade, and manage risk across global markets. The company was founded in 2008 and is headquartered in New York, New York.

BGC Group, Inc. operates as a financial brokerage and technology company in the United States and internationally. The company offers various brokerage products, such as fixed income, such as government bonds, corporate bonds, and other debt instruments, as well as related interest rate derivatives and credit derivatives; equities, energy and commodities, shipping, insurance, and futures and options. It also provides trade execution, connectivity solutions, brokerage services, clearing, trade compression and other post-trade services, information, and other back-office services to an assortment of financial and non-financial institutions. In addition, the company offers electronic and hybrid brokerage, other financial technology solutions, market data and related information services. Further, its integrated platform is designed to provide flexibility to customers with regard to price discovery, execution and processing of transactions, Hybrid, or in various markets, as well as fully electronic brokerage services in connection with transactions executed either OTC or through an exchange. The company primarily serves banks, broker-dealers, investment banks, trading firms, hedge funds, governments, and corporations, as well as investment firms. BGC Group, Inc. was founded in 1945 and is headquartered in New York, New York.