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Three sectors according to Fourastié Clark's sector model. One classical breakdown of economic activity distinguishes three sectors: [1] Primary: involves the retrieval and production of raw-material commodities, such as corn, coal, wood or iron. Miners, farmers and fishermen are all workers in the primary sector.
The Global Industry Classification Standard (GICS) is an industry taxonomy developed in 1999 by MSCI and Standard & Poor's (S&P) for use by the global financial community. The GICS structure consists of 11 sectors, 25 industry groups, 74 industries and 163 sub-industries [1] into which S&P has categorized all major public companies.
At the top level, they are often classified according to the three-sector theory into sectors: primary (extraction and agriculture), secondary (manufacturing), and tertiary (services). Some authors add quaternary (knowledge) or even quinary (culture and research) sectors. Over time, the fraction of a society's activities within each sector changes.
The North American Industry Classification System or NAICS (/ n eɪ k s /) [1] is a classification of business establishments by type of economic activity (the process of production). It is used by governments and business in Canada, Mexico, and the United States of America.
Primary sector of the economy (the raw materials industry) Secondary sector of the economy (manufacturing and construction) Tertiary sector of the economy (the "service industry") Quaternary sector of the economy (information services) Quinary sector of the economy (humanitarian services)
The Refinitiv Business Classification (TRBC) is an industry classification of global companies. It was developed by the Reuters Group under the name Reuters Business Sector Scheme (RBSS), [1] [2] [3] was rebranded to Thomson Reuters Business Classification (TRBC) when the Thomson Corporation acquired the Reuters Group in 2008, forming Thomson Reuters, and was rebranded again, to The Refinitiv ...
Colorado Springs, Colorado. Region: West 2025 existing home sale counts year-over-year: 27.1% 2025 existing home median sale price year-over-year: 12.7% Discover More: Renting Vs.Owning a Home ...
The first two digits of the code represent the major industry sector to which a business belongs. The third and fourth digits describe the sub-classification of the business group and specialization, respectively. For example, "36" refers to a business that deals in "Electronic and Other Equipment."