OTC Markets Group, Inc. engages in the provision of trading, corporate, and market data services. It operates through the following business lines: OTC Link LLC, Market Data Licensing, and Corporate Services. The OTC Link LLC business line pertains to OTC Link ATS, OTC Link ECN, and OTC Link NQB alternative trading systems (ATSs), which offers trading services to FINRA member broker-dealer subscribers. The Market Data Licensing business line distributes market data and financial information for securities and companies. The Corporate Services business line operates the OTCQX and OTCQB markets and offers issuers disclosure and regulatory compliance products. The company was founded in 1904 and is headquartered in New York, NY.