The OTC Bulletin Board or OTCBB is a United States quotation medium for subscribing members used for many over-the-counter (OTC) equity securities that are not listed on the NASDAQ or a national stock exchange. Broker-dealers who subscribe to the system, which is not electronic, can use the OTCBB to enter orders for OTC securities that qualify to be quoted. According to the SEC, "fraudsters often claim or imply that an OTCBB company is a Nasdaq company to mislead investors into thinking that the company is bigger than it is."

FINRA runs and provides regulatory services to the OTCBB. The OTCBB formerly collected 100% of quotes, but that number has declined with the rise of its competitor Pink OTC Markets, which uses an electronic quotation system. In September 2009, FINRA announced that it would be selling the OTCBB. Pink OTC Markets was the leading contender for purchasing the OTCBB, but terms could not be reached between itself and FINRA.In September 2010, FINRA announced that it had reached terms for the sale of the OTCBB with well known investment bank Rodman & Renshaw. Along with the sale of the OTCBB and, in an effort to provide uniform regulation to all OTC issues and, subsequently, transparency to the OTC market, FINRA has proposed a "quotation consolidation system." Under the quotation consolidation system, FINRA would require dealers to report all of their quotes to the quotation consolidation system, regardless of the market upon which they were originally quoted. This would enable FINRA to have access to all quotes in OTC issues and regulate the OTC market in its entirety. Pink OTC argues this is anti-competitive and an abuse of FINRA's authority.