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List of Publicly Traded Companies Headquartered in Connecticut

The companies on this list are headquartered in Connecticut. Examples of some of the larger companies on this list based on market capitalization include:

Aetna Inc. (AET)

Alexion Pharmaceuticals, Inc. (ALXN)

Amphenol Corporation (APH)

Booking Holdings Inc. (BKNG)

Charter Communications, Inc. (CHTR)

Cigna Corporation (CI)

Hartford Financial Services Group, Inc. (The) (HIG)

Interactive Brokers Group, Inc. (IBKR)

Praxair, Inc. (PX)

Synchrony Financial (SYF)

United Technologies Corporation (UTX)

Xerox Corporation (XRX)

Select the company’s link to access charts, news links and company website and social media information.

Aerospace and Defense

Hexcel Corporation (HXL) (Composites company: composite materials, parts and structures used in commercial and military aircraft, helicopters, launchers and satellites)

Kaman Corporation (KAMN) (Helicopter service, systems, components and support; engineering design analysis, aircraft bearings and components; industrial distribution)

United Technologies Corporation (UTX) (Conglomerate: aircraft engines, helicopters, HVAC, and other industrial products)

Aircraft Leasing

Aircastle Limited (AYR) (Jet aircraft leasing company)

Asset Management

Virtus Investment Partners, Inc. (VRTS)


Bankwell Financial Group, Inc. (BWFG) (Holding company for Bankwell)

First Connecticut Bancorp, Inc. (FBNK) (Holding company for Farmington Bank)

Patriot National Bancorp Inc. (PNBK) (Branches in New York and Connecticut)

PB Bancorp, Inc. (PBBI) (Holding company for Putnam Bank)

People’s United Financial, Inc. (PBCT) (Holding company for People’s United Bank; branches in multiple states in the northeast region of the United States)

Salisbury Bancorp, Inc. (SAL) (Holding company for Salisbury Bank and Trust Company; branches in Connecticut, New York and Massachusetts)

SI Financial Group, Inc. (SIFI) (Holding company for Savings Institute Banks & Trust company; branches in Connecticut and Rhode Island)

United Financial Bancorp, Inc. (UBNK) (Holding company for United Bank; branches in Connecticut and Massachusetts)

Webster Financial Corporation (WBS) (Holding company for Webster Bank; branches in Connecticut, New York, Massachusetts and Rhode Island)

Biotech and Pharmaceuticals

Achillion Pharmaceuticals, Inc. (ACHN) (Complement-related diseases and infectious diseases)

Alexion Pharmaceuticals, Inc. (ALXN) (Biopharmaceutical company: nocturnal hemoglobinuria, atypical hemolytic uremic syndrome, hypophosphatasia, Lysosomal Acid Lipase Deficiency)

Biohaven Pharmaceutical Holding Company Ltd. (BHVN) (IPO May 4, 2017; biopharmaceutical company: neurological diseases)

BioXcel Therapeutics, Inc. (BTAI) (IPO March 8, 2018; biopharmaceutical company: neuroscience and immuno-oncology)

Cara Therapeutics, Inc. (CARA) (Chemical entities designed to alleviate pain and pruritus)

Loxo Oncology, Inc. (LOXO) (Cancer therapies)

Melinta Therapeutics, Inc. (MLNT) (Antibacterial products used in the treatment of infectious diseases)

NanoViricides, Inc. (NNVC) (Nanotechnology-based biomimetic anti-viral medicines)


Interactive Brokers Group, Inc. (IBKR) (Automated electronic broker)

Business Services

Information Services Group, Inc. (III) (Research, consulting, managed services)

Xerox Corporation (XRX) (Printers, copiers; business services)


Charter Communications, Inc. (CHTR) (Cable Operator)


Praxair, Inc. (PX) (Industrial gases)


RBC Bearings Incorporated (ROLL) (Engineered precision components and bearings)

Rogers Corporation (ROG) (Specialty materials and components)

Construction and Engineering Services

EMCOR Group, Inc. (EME) (Infrastructure Systems)

Credit Cards

Synchrony Financial (SYF) (Private label credit cards)

Diversified Companies

General Electric Company (GE) (Appliances and lighting, aviation products, energy management, financial services, healthcare products, oil & gas equipment, power generation, railroad equipment, water products)

Electrical Equipment

Amphenol Corporation (APH) (Antennas, Connectors, coaxial and high-speed specialty cable, interconnect systems, sensors and sensor- based products)

Hubbell Inc. (HUBB) (Electrical and electronic products)


Chicken Soup for the Soul Entertainment, Inc. (CSSE) (IPO August 18, 2017; Chicken Soup for the Soul video content)

World Wrestling Entertainment, Inc. (WWE)


Eastern Company (The) (EML) (Industrial hardware, security products and metal castings)

Financial News, Research and Data

FactSet Research Systems Inc. (FDS) (Research, analytics, data feeds and mobile applications used by investment professionals)


Sturm, Ruger & Company, Inc. (RGR) (Commercial sporting market)

Food and Beverage

The Chef’s Warehouse, Inc. (CHEF) (Distributes specialty foods to hotels, restaurants and specialty food companies)

Freight and Logistics

XPO Logistics, Inc. (XPO) (Transportation and logistics services)

Fuel Cells

FuelCell Energy, Inc. (FCEL) (Fuel cell power plants)


Acme United Corporation (ACU) (Knives, cutlery and tools, scissors and rulers, first aid products; brands include Camillus, Clauss, PhysiciansCare and Westcott)


NXT-ID Inc. (NXTD) (Biometric and security technology)

Industrial Machinery and Equipment

Barnes Group, Inc. (B) (Aerospace products for the commercial and military markets: fabricated components, precision-machined components and assemblies for a range of turbine builders, jet engine component overhaul and repair services; industrial products)

Crane Company (CR) (Aerospace and electronics, fluid handling products and systems, merchandising systems, fiberglass reinforced plastic composite materials)

Lydall, Inc. (LDL) (Industrial filtration products; thermal insulation products, thermal and acoustical fibers and metals used in noise and heat abatement)


Aetna Inc. (AET) (Behavioral health, dental, disability, group life, medical and pharmacy)

Cigna Corporation (CI) (Behavioral, dental, group disability, group life and pharmacy)

Hartford Financial Services Group, Inc. (The) (HIG) (Property and casualty insurance, group benefits and mutual funds)

Independence Holding Company (IHC) (Health and life)

The Navigators Group, Inc. (NAVG) (Specialty insurance products)

W.R. Berkley Corporation (WRB) (Commercial insurance products; global reinsurance product line)

IT Services

Gartner, Inc. (IT) (IT research and advisory company)


Revolution Lighting Technologies, Inc. (RVLT) (LED Lighting Products)


Terex Corporation (TEX) (Materials Handling)

Medical Devices

CAS Medical Systems, Inc. (CASM) (Patient monitoring products)

Metals and Mining

Tronox Limited (TROX) (Mining – Titanium Ore and Soda Ash)

Mortgage Investment

Ellington Financial LLC (EFC) (Mortgage related investments)

Sachem Capital Corp. (SACH) (IPO February 10, 2017; mortgage REIT)

Office Supplies

Pitney Bowes Inc. (PBI) (Mailing and postage supplies, mailing equipment and services, digital commerce solutions)

Packaging and Containers

Silgan Holdings Inc. (SLGN) (Packaging Products)


Star Gas Partners, L.P. (SGU) (Home heating oil and propane distributor)


Genesee & Wyoming, Inc. (GWR) (Operations in North America, Australia and Europe)

Real Estate

Ellington Residential Mortgage REIT (EARN) (Mortgage REIT)

Starwood Property Trust, Inc. (STWD) (Mortgage REIT)

Urstadt Biddle Properties Inc. (UBA) (Shopping center REIT)

Rental and Leasing

United Rentals, Inc. (URI) (Equipment leasing: construction and industrial equipment)


Ethan Allen Interiors Inc. (ETH) (Interior design services, furniture and accessories)


Photronics, Inc. (PLAB) (Photomask and Reticle Technology)


Dorian LPG Ltd. (LPG) (Liquefied petroleum gas (LPG) shipping company)


SS&C Technologies Holdings, Inc. (SSNC) (Provides cloud-based services and software to the financial services industry)

Sporting Goods

Sturm, Ruger & Company, Inc. (RGR) (Commercial sporting market)

Telephone Companies

Frontier Communications Corporation (FTR) (Integrated communications services in nearly 30 states)


Stanley Black & Decker, Inc. (SWK) (Hand tools, power tools and tool storage products)

Transaction Technology

TransAct Technologies Incorporated (TACT) (Products for transaction based industries including printers, terminals and software)


Booking Holdings Inc. (BKNG) (Online travel company: brands include,,,, KAYAK and OpenTable)


Avangrid, Inc. (AGR) (Operations in approximately 25 states)

Utilities: Water

Connecticut Water Service, Inc. (CTWS) (Connecticut and Maine)