Thomson Reuters Business Classification schema begins with 10 Economic Sectors, which are shown below. Each of these Economic Sectors splits into Business Groups, Industry Groups and finally, at the most granular level, Industries:


Sectors - Basic MaterialsSector: Basic Materials
Description: Manufacturers, extractors and refiners of chemicals, minerals, precious metals, steel, aluminum, forest products, and construction and other raw materials


Sectors - CyclicalsSector: Cyclical Consumer
Description: Manufacturers of automobiles, household goods, textiles and other products, as well as homebuilders and retailers, and providers of consumer services, such as hotel, entertainment and media services


Sectors - EnergySector: Energy
Description: Explorers, refiners, marketers and distributors of fossil fuels and renewable energy, as well as manufacturers of energy-related equipment and providers of supporting services


Sectors - FinancialsSector: Financials
Description: Operators of commercial and investment banks, investment trusts and financial markets, as well as providers of investment, insurance and real estate services


Sectors - HealthcareSector: Healthcare
Description: Manufacturers, developers and marketers of pharmaceuticals, medical equipment and supplies, as well as advanced therapeutic treatments and devices, and providers of healthcare facilities and medical research and development


Sectors - IndustrialsSector: Industrials
Description: Manufacturers of industrial equipment and commercial supplies, as well as providers of related services, such as diversified trading, distribution operations and transportation services


Sectors - Non-CyclicalsSector: Non-Cyclical Consumer
Description: Producers, processors and retailers of food, tobacco and beverages, and manufacturers of household and personal products, as well as providers of personal services


TRBC Technology SectorSector: Technology
Description: Manufacturers of semiconductors, communications equipment, computer hardware and technology related office equipment, as well as providers of consulting and IT services


Sectors - TelecommunicationsSector: Telecommunications
Description: Owners and operators of fixed line and wireless telecommunication networks and services


Sectors - UtilitiesSector: Utilities
Description: Producers and distributors of electricity, natural gas, water and steam, among other utility services, whose distribution facilities and infrastructure are regulated by government

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