What is the over-the-counter bulletin board (OTCBB)?
The OTC Bulletin Board (OTCBB) is a regulated quotation service that displays real-time quotes, last-sale prices, and volume information in over-the-counter (OTC) equity securities. An OTC equity security generally is any equity that is not listed or traded on NASDAQ or a national securities exchange. OTCBB securities include national, regional, and foreign equity issues, warrants, units, American Depository Receipts (ADRs), and Direct Participation Programs (DPPs).