There are no securities or commodities exchanges in Connecticut. Securities broker-dealers organizations within the state number 1,310, with 12,166 employees. There are also 358 investment advisory firms. The state is headquarters to 106 NASDAQ companies, 16 NASDAQ market makers, 21 AMEX companies, and 12 NYSE listed companies that were incorporated in Connecticut. The top five according to revenues are AETNA, Stanley Works, Hubbell Corp., MBIA, and The United Illuminating Co.