Intermarket Surveillance Information System (ISIS)

Intermarket Surveillance Information System (ISIS) - Intermarket Surveillance Information System (ISIS) is a system for storing options and equity trade information from the eight national securities exchanges, including the New York Stock Exchange and more important National Association of Securities Dealers. Included, this system is information on trades, the places where they occurred, the firms involved, and the brokers making the trades. A data share tool that collects information on equity and options transactions. It allows regulators and the exchange officials to monitor the market and protect the investing public. The information provided is online to give surveillance personnel complete timely data about transactions potential violations.