Industry classification or industry taxonomy is a type of economic taxonomy that organizes companies into industrial groupings based on similar production processes, similar products, or similar behavior in financial mark... A wide variety of taxonomies is in use, sponsored by different organizations and based on different criteria.
1The NAICS Index File lists 19745 rubrics beyond the 6 digits which are not assigned codes.
Besides the widely used taxonomies above, there are also more specialized proprietary systems:
- FactSet's Revere, line-of-business, about 11,000 leaf nodes, acquired in 2013
- IndustryBuildingBlocks, line-of-business about 15,000 leaf nodes
- First Research taxonomy, used by Hoover's
- WAND, Inc.'s Product and Service Taxonomy
- Standard & Poor's, "What's an Industry" pdf
- Dave Nadig, Lara Crigger, "Signal from Noise" IndexUniverse, p. 2
- First Research taxonomy at Hoover's
- Michael E. Porter (1980). Competitive Strategy. Free Press, New York. ISBN 978-0743260886.
- Michael E. Porter (1985). Competitive Advantage. Free Press, New York. ISBN 978-0743260879.
- Bernard Guibert, Jean Laganier, and Michel Volle, "An Essay on Industrial Classifications", Économie et statistique 20 (February 1971) full text