A market where products such as stocks, foreign currencies, and other cash items are bought and sold by telephone and other means of communications. Chicago Board of Trade glossary
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over-the-counter market UK US noun [S]
► FINANCE, STOCK MARKET a market in which shares are bought and sold directly on a computer system rather than through a stock market: »
Players in the over-the-counter market can negotiate the sale or purchase of custom options for any amount of money and any time frame.
Financial and business terms. 2012.