The National Quotation Bureau (NQB) was the former name of the entity now known as Pink Sheets, LLC, which provides pricing and financial information for over-the-counter (OTC) securities.
Pink Sheets is a daily publication by Pink Sheets, LLC (formerly known as the National Quotation Bureau) that details the bid and asked prices of thousands of over-the-counter (OTC) stocks. Brokerage firms subscribe to the Pink Sheets, named for their color, because they provide current prices and list market makers who trade each stock.
The Yellow Sheets are daily publications issued by the National Quotation Bureau (NQB) that detail the bid and asked prices and the firms making a market in corporate bonds traded in the Over-the-Counter (OTC) market.
