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U.S. Standard Industrial Classification (sic)
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Top-Down SIC Hierarchy

SIC [1987]  →  Division  →  Major Group  →  Industry Group  →  Industry  ⇒  Registrants
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SIC CodeU.S. Division  [ SIC Codes ]Registrants
In ascending order   
AAgriculture, Forestry, and Fishing  [ 01##–09## ]334 
BMining  [ 10##–14## ]4,472 
CConstruction  [ 15##–17## ]672 
DManufacturing  [ 20##–39## ]19,625 
ETransportation, Communications, Electric, Gas, and Sanitary Services  [ 40##–49## ]5,535 
FWholesale Trade  [ 50##–51## ]2,079 
GRetail Trade  [ 52##–59## ]3,221 
HFinance, Insurance, and Real Estate  [ 60##–67## ]29,144 
IServices  [ 70##–89## ]14,918 
JPublic Administration  [ 91##–97## ]
KNonclassifiable Establishments  [ 99## ]1,127 

Bottom-Up SIC Hierarchy

SIC [1987]  →  Product  →  Business  →  Industry  ⇒  Registrants
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A to ZProduct  or  Business
In ascending order 
A...Abdominal supporters, braces, and trusses . . . Azoic dyes
B...Babbitt metal smelting and refining, secondary . . . Buying agents, real estate
C...C-clamps . . . Cytology and histology diagnostic products
D...Dairy bars . . . Dzus fasteners
E...Ear stoppers . . . Eyes, glass and plastics
F...Fabric finishing of wool, mohair, & similar animal fibers . . . Futures exchanges, contract
G...Gabardine, cotton . . . Gyroscopes
H...Haberdashery stores – retail . . . Hypophosphites
I...Ice bank controls . . . IV transfusion apparatus
J...Jackets – made in the same establishment . . . Juvenile furniture, wood
K...Kalsomines, dry or paste . . . Kyanite mining
L...Label moisteners, industrial type . . . Lye, household
M...Macadamia groves and farms . . . Myrobalans extract
N...N-methylpiperazine . . . Nytril broadwoven fabrics
O...Oak extract . . . Ozone machines
P...Pacemakers . . . Pyrrhotite mining
Q...Quail farms . . . Quotation service, stock
R...Rabbit farms . . . Rye farms
S...S-type rubber . . . Systems integration, computer
T...T-shirts, outerwear – made in the same establishment . . . Tyuyamunite mining
U...U.S. attorneys’ offices . . . Utility trailers – retail
V...V-belts, rubber or plastics . . . Vulcanizing tires and tubes
W...Wading pools, plastics coated fabric . . . Wurtzilite mining
X...X-ray apparatus & tubes: medical, industrial, research, & control . . . Xylophones & parts
Y...Y bends and branches, pipe: metal . . . Youth self-help organizations
Z...Zein fibers . . . Zwieback

The SIC, NAICS and GICS Standards

The U.S. Standard Industrial Classification (sic) is an old U.S. statistical classification standard underlying all establishment-based Federal economic statistics classified by industry.  The SIC, most recently as SIC version [1987], was used to promote the comparability of establishment data describing various facets of the U.S. economy.  The classification covered the entire field of economic activities at that time and defined industries in accordance with the composition and structure of the U.S. economy.  It was first published as SIC [1938-40], and was then updated periodically as SIC ..., [1957], [1967], ..., and [1987].  In the SIC methodology, the letter (A-K) or the number of digits (2-6) in the Code indicates the classification hierarchy tier, as follows:
SIC Tiers: Divisions  Major Groups  Industry Groups  Industries  BusinessesProducts 
Codes:1 letter2 digits3 digits4 digits 5 digits6 digits 
Totals:  [1987]  
Totals:  [SEC]
— 15,219 —
—   5,553 —
The SEC uses a modified subset of the SIC [1987] Industry Codes as its standard.  The Industry Codes subset that the SEC uses has only 430 (29%) of the 1,504 official SIC [1987] 4-digit Industry Codes, plus 14 unique SEC-specific Codes, so it is identified herein as “SIC [SEC]”.  The SIC [SEC] Code that appears in a company’s disseminated EDGAR Filings indicates the basic type of business the company is in.  The Code is used by the SEC Filings Review Offices (ROs) as a basis for assigning review responsibility for the company’s Filings.  (For details, see the SEC’s Division of Corporation Finance:  Standard Industrial Classification (SIC) Code List.)  Because SIC [SEC] contains only a small fraction of the SIC [1987] Codes, SEC Info parses all SEC Filings for all SIC [1987] Codes, in order to show more accurately and completely how Registrants classify themselves.  As used in Financial Reporting, see “Industry... [sec] (sic)” in Standard xbrl Taxonomies used in SEC Filings.

The North American Industry Classification System (naics) is a newer North American standard used by Federal agencies, such as the IRS, in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the North American economy.  The NAICS, updated as NAICS version [2012], was developed under the auspices of the U.S. Office of Management and Budget (OMB) to replace SIC [1987].  It was developed jointly by the OMB, Canada and Mexico to allow for a high level of comparability in business statistics among the North American countries.  It was first published as NAICS [1997], and was then updated every five years as NAICS [2002], [2007], ..., and [2012].  In the NAICS methodology, the number of digits (2-6) in the Code indicates the classification hierarchy tier, as follows:
NAICS Tiers: Sectors  Subsectors  Industry Groups  Industries  BusinessesProducts 
Codes:2 digits3 digits4 digits5 or 6 digits –– 
Totals:  [2012]  
713 or 1,065
721 or 1,175
— 19,255 —
— 19,720 —
To make SIC and NAICS usage interoperable, SEC Info cross-references SIC [1987] with NAICS [2012] and presents both standards herein, mapping each SIC Code and NAICS Code to one or more of its counterparts.  As used in Financial Reporting, see “Industry... [omb] (naics)” in Standard xbrl Taxonomies used in SEC Filings.

The Global Industry Classification Standard (gics) is an enhanced industry classification system jointly developed by Standard & Poor’s Financial Services LLC and MSCI Inc. in 1999.  GICS was developed in response to the financial community’s need for one complete and consistent set of global sector and industry definitions, and it has become the standard widely recognized by market participants worldwide.  It sets a foundation for the creation of replicable and custom-tailored portfolios and indexes, and enables meaningful comparisons of sectors and industries.  GICS is a four-tiered, hierarchical classification system, as follows:
GICS Tiers:  Sectors    Industry Groups    Industries    Sub-Industries  
Codes:2 digits4 digits6 digits8 digits
Totals:  [2018]      11    2469158
  EnergyMaterialsIndustrialsConsumer DiscretionaryConsumer StaplesHealth Care  
 FinancialsInformation TechnologyCommunication ServicesUtilitiesReal Estate  
The GICS methodology is an industry analytical framework for investment research, portfolio management, asset allocation and index formation.  Companies are classified both quantitatively and qualitatively.  Each company is assigned to only one GICS classification at the Sub-Industries level according to its principal business activity.  S&P Dow Jones Indices and MSCI use revenues as a key factor in determining a firm’s principal business.  Earnings and market are also recognized as important and relevant information for classification purposes.


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