CQS(redirected from CQ)
Also found in: Dictionary, Acronyms, Wikipedia.
Consolidated Quotation System
An electronic service, regulated by the SEC, containing quotation information for securities listed on the New York Stock Exchange, the American Stock Exchange, and other, regional exchanges, as well as member firms in the National Association of Securities Dealers. NASDAQ also processes the data and provides it to subscribers under the name Composite Quotation Service.