
Connecticut is home to 14 of the businesses on the Fortune 500 list — as well as 60 more leaders in such growing industries as advanced manufacturing, aerospace, bioscience, insurtech, medtech and more. Listed below are the Fortune 500 companies headquartered in Connecticut, but scroll down to see a few more examples of the top employers in each of our key industry sectors. Fortune 500 Companies Connecticut is home to the headquarters of 14 companies on the 2019 Fortune 500 list, which is compiled based on a combination of five factors: sales, profits, assets, market value, and employees.
Fortune, Fortune 500, 2019
- Amphenol
- Booking Holdings
- Charter Communications
- Cigna
- EMCOR Group
- Frontier Communications
- Hartford Financial Services
- Stanley Black and Decker
- Synchrony Financial
- United Rentals
- United Technologies
- W.R. Berkley
- Xerox
- XPO Logistics
Top employers in each industry sector.
Listed below is just a small sampling of the top employers in each of Connecticut’s key industry sectors.Aerospace / Defense

Bioscience / Healthcare / Medical
Consumer
- Amazon
- BIC
- Bigelow Tea
- Bob’s Furniture
- Duracell
- Ethan Allen
- Henkel
- LEGO Systems
- Nestle Waters North America
- Newman’s Own
- Pepperidge Farm
- Vineyard Vines

Film, TV, Digital Media
Financial Services
- AQR Capital Management
- Bridgewater Associates
- Canaan Partners
- Synchrony Financial
- Webster Bank
- W.R. Berkley Corp.

Green Technology
- Doosan Fuel Cell America, Inc.
- FuelCell Energy Inc.
- Praxair Inc.
- Precision Combustion Inc.
- Proton OnSite
Insurance
Manufacturing
Technology Innovation

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