Instinet An electronic securities order matching (trading) and information system that allows members (primarily professional traders and investors) to display bid and offer quotes for stocks, and to transact between themselves using brokers. As a global securities broker, Instinet enables more than 1,500 institutional customers to trade securities in more than 40 global markets. Investopedia Says: Instinet (Nasdaq: INET) is Wall Street's oldest and largest electronic communications network (ECN), and since it was acquired by Reuters Group (Nasdaq: RTRSY) in 1987, it and other ECNs have evolved into major threats to the established stock exchanges. Related Terms: Broker Broker-Dealer Electronic Communication Network - ECN Extended Trading Hybrid Market Institutional Investor Online Trading Reuters Trade Wall Street |