OTC, Other OTC or Grey Market
"OTC", "Other OTC" or "Grey Market" is a security that is not currently traded on the OTCQX, OTCQB or Pink markets. Broker-dealers are not willing or able to publicly quote OTC securities because of a lack of investor interest, company information availability or regulatory compliance.
What is the gray market for stocks?
An unofficial market where securities are traded. Gray (or “grey”) market trading generally occurs when a stock that has been suspended trades off-market, or when new securities are bought and sold before official trading begins.