Industries

275 industries, by how many companies report in each. Every company is classified by the SIC code on its own filings.

275 industries

Pharmaceutical Preparations462
Services-Prepackaged Software200
Real Estate Investment Trusts194
State Commercial Banks173
Biological Products, (No Diagnostic Substances)151
Surgical & Medical Instruments & Apparatus131
Blank Checks126
Finance Services107
Services-Business Services, NEC100
National Commercial Banks83
Semiconductors & Related Devices81
Crude Petroleum & Natural Gas80
Commodity Contracts Brokers & Dealers76
Services-Computer Processing & Data Preparation70
Fire, Marine & Casualty Insurance56
Services-Computer Programming, Data Processing, Etc.56
55
Investment Advice44
Services-Management Consulting Services43
Retail-Eating Places42
Services-Computer Integrated Systems Design40
Miscellaneous Electrical Machinery, Equipment & Supplies39
Electric Services38
Metal Mining37
Savings Institution, Federally Chartered37
Motor Vehicle Parts & Accessories36
Real Estate36
Electromedical & Electrotherapeutic Apparatus31
Savings Institutions, Not Federally Chartered30
Medicinal Chemicals & Botanical Products27
Services-Computer Programming Services27
Insurance Agents, Brokers & Service26
Services-Amusement & Recreation Services26
Services-Medical Laboratories26
Gold and Silver Ores25
Orthopedic, Prosthetic & Surgical Appliances & Supplies25
Industrial Organic Chemicals24
Laboratory Analytical Instruments24
Services-Educational Services24
Retail-Catalog & Mail-Order Houses23
Security Brokers, Dealers & Flotation Companies23
Radio & Tv Broadcasting & Communications Equipment22
Services-Miscellaneous Amusement & Recreation22
Hotels & Motels21
Beverages20
Electric & Other Services Combined19
Mining & Quarrying of Nonmetallic Minerals (No Fuels)19
Agricultural Production-Crops18
Communications Services, NEC18
Oil & Gas Field Services, NEC18
Retail-Auto Dealers & Gasoline Stations18
Services-Help Supply Services18
Food and Kindred Products17
In Vitro & In Vivo Diagnostic Substances17
Industrial Instruments For Measurement, Display, and Control17
Life Insurance17
Operative Builders17
Retail-Miscellaneous Retail17
Services-Advertising17
Services-Personal Services17
Telephone Communications (No Radiotelephone)17
Chemicals & Allied Products16
Motor Vehicles & Passenger Car Bodies16
Perfumes, Cosmetics & Other Toilet Preparations16
Services-Commercial Physical & Biological Research16
Construction - Special Trade Contractors15
Oil & Gas Field Machinery & Equipment15
Transportation Services15
Communications Equipment, NEC14
Computer Peripheral Equipment, NEC14
Natural Gas Transmission14
Petroleum Refining14
Services-Health Services14
Special Industry Machinery, NEC14
Aircraft13
Natural Gas Distribution13
Real Estate Agents & Managers (For Others)13
Retail-Retail Stores, NEC13
Sporting & Athletic Goods, NEC13
Trucking (No Local)13
Air Transportation, Scheduled12
Cable & Other Pay Television Services12
Patent Owners & Lessors12
Water Supply12
Computer Communications Equipment11
Electronic Components, NEC11
Heavy Construction Other Than Bldg Const - Contractors11
Industrial Inorganic Chemicals11
Instruments For Meas & Testing of Electricity & Elec Signals11
Personal Credit Institutions11
Plastic Materials, Synth Resins & Nonvulcan Elastomers11
Printed Circuit Boards11
Refuse Systems11
Services-Motion Picture & Video Tape Production11
Agricultural Chemicals10
Apparel & Other Finishd Prods of Fabrics & Similar Matl10
General Industrial Machinery & Equipment, NEC10
Hospital & Medical Service Plans10
Misc Industrial & Commercial Machinery & Equipment10
Radio Broadcasting Stations10
Retail-Family Clothing Stores10
Retail-Grocery Stores10
Search, Detection, Navigation, Guidance, Aeronautical Sys10
Services-Misc Health & Allied Services, NEC10
Television Broadcasting Stations10
Aircraft Parts & Auxiliary Equipment, NEC9
Arrangement of Transportation of Freight & Cargo9
Guided Missiles & Space Vehicles & Parts9
Household Furniture9
Measuring & Controlling Devices, NEC9
Miscellaneous Chemical Products9
Plastics Products, NEC9
Retail-Variety Stores9
Security & Commodity Brokers, Dealers, Exchanges & Services9
Services-Equipment Rental & Leasing, NEC9
Telephone & Telegraph Apparatus9
Water Transportation9
Wholesale-Drugs, Proprietaries & Druggists' Sundries9
Wholesale-Electronic Parts & Equipment, NEC9
Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip8
Bottled & Canned Soft Drinks & Carbonated Waters8
Construction Machinery & Equip8
Cutlery, Handtools & General Hardware8
Drilling Oil & Gas Wells8
Electrical Industrial Apparatus8
General Industrial Machinery & Equipment8
Retail-Auto & Home Supply Stores8
Retail-Eating & Drinking Places8
Services-Engineering Services8
Services-Miscellaneous Business Services8
Services-Offices & Clinics of Doctors of Medicine8
Surety Insurance8
Agricultural Services7
Land Subdividers & Developers (No Cemeteries)7
Men's & Boys' Furnishgs, Work Clothg, & Allied Garments7
Miscellaneous Fabricated Metal Products7
Opeators of Nonresidential Buildings7
Ophthalmic Goods7
Pipe Lines (No Natural Gas)7
Pumps & Pumping Equipment7
Retail-Apparel & Accessory Stores7
Retail-Miscellaneous Shopping Goods Stores7
Services-Advertising Agencies7
Services-Home Health Care Services7
Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens)7
Wholesale-Computers & Peripheral Equipment & Software7
Wholesale-Miscellaneous Nondurable Goods7
Air Transportation, Nonscheduled6
Canned, Frozen & Preservd Fruit, Veg & Food Specialties6
Computer Storage Devices6
Electric Lighting & Wiring Equipment6
Electronic Components & Accessories6
Electronic Computers6
Farm Machinery & Equipment6
General Bldg Contractors - Residential Bldgs6
Household Audio & Video Equipment6
Miscellaneous Manufacturing Industries6
Miscellaneous Metal Ores6
Mortgage Bankers & Loan Correspondents6
Natural Gas Transmisison & Distribution6
Services-Auto Rental & Leasing (No Drivers)6
Services-General Medical & Surgical Hospitals, NEC6
Services-Management Services6
Services-To Dwellings & Other Buildings6
Ship & Boat Building & Repairing6
Short-Term Business Credit Institutions6
Soap, Detergents, Cleang Preparations, Perfumes, Cosmetics6
Water, Sewer, Pipeline, Comm & Power Line Construction6
Wholesale-Groceries & Related Products6
Wholesale-Groceries, General Line6
Accident & Health Insurance5
Aircraft Engines & Engine Parts5
Bituminous Coal & Lignite Surface Mining5
Electronic & Other Electrical Equipment (No Computer Equip)5
Engines & Turbines5
Fabricated Structural Metal Products5
Gas & Other Services Combined5
Household Appliances5
Newspapers: Publishing or Publishing & Printing5
Optical Instruments & Lenses5
Ordnance & Accessories, (No Vehicles/Guided Missiles)5
Paperboard Containers & Boxes5
Photographic Equipment & Supplies5
Radiotelephone Communications5
Railroads, Line-Haul Operating5
Refrigeration & Service Industry Machinery5
Retail-Building Materials, Hardware, Garden Supply5
Retail-Lumber & Other Building Materials Dealers5
Retail-Nonstore Retailers5
Rolling Drawing & Extruding of Nonferrous Metals5
Services-Automotive Repair, Services & Parking5
Services-Consumer Credit Reporting, Collection Agencies5
Silver Ores5
Steel Works, Blast Furnaces & Rolling & Finishing Mills5
Wholesale-Apparel, Piece Goods & Notions5
Wholesale-Farm Product Raw Materials5
Wholesale-Lumber & Other Construction Materials5
Wholesale-Machinery, Equipment & Supplies5
Calculating & Accounting Machines (No Electronic Computers)4
Cigarettes4
Converted Paper & Paperboard Prods (No Contaners/Boxes)4
Deep Sea Foreign Transportation of Freight4
Dental Equipment & Supplies4
Electrical Work4
Electronic Connectors4
Fabricated Plate Work (Boiler Shops)4
Fats & Oils4
Footwear, (No Rubber)4
Games, Toys & Children's Vehicles (No Dolls & Bicycles)4
Grain Mill Products4
Hazardous Waste Management4
Hotels, Rooming Houses, Camps & Other Lodging Places4
Industrial & Commercial Fans & Blowers & Air Purifing Equip4
Leather & Leather Products4
Lessors of Real Property, NEC4
Loan Brokers4
Metal Forgings & Stampings4
Metalworkg Machinery & Equipment4
Miscellaneous Food Preparations & Kindred Products4
Mobile Homes4
Motorcycles, Bicycles & Parts4
Motors & Generators4
Paper Mills4
Railroad Equipment4
Real Estate Operators (No Developers) & Lessors4
Retail-Department Stores4
Retail-Drug Stores and Proprietary Stores4
Retail-Furniture Stores4
Retail-Home Furniture, Furnishings & Equipment Stores4
Retail-Shoe Stores4
Services-Detective, Guard & Armored Car Services4
Services-Membership Sports & Recreation Clubs4
Services-Miscellaneous Equipment Rental & Leasing4
Services-Motion Picture Theaters4
Services-Specialty Outpatient Facilities, NEC4
Services-Testing Laboratories4
Special Industry Machinery (No Metalworking Machinery)4
Sugar & Confectionery Products4
Telegraph & Other Message Communications4
Title Insurance4
Truck & Bus Bodies4
Wholesale-Durable Goods, NEC4
Wholesale-Industrial Machinery & Equipment4
Wholesale-Metals Service Centers & of fices4
Agricultural Prod-Livestock & Animal Specialties3
Air Courier Services3
Carpets & Rugs3
Cement, Hydraulic3
Coating, Engraving & Allied Services3
Commercial Printing3
Computer & office Equipment3
Drawing & Insulating of Nonferrous Wire3
Electric Housewares & Fans3
Fabricated Rubber Products, NEC3
Federal & Federally-Sponsored Credit Agencies3
Functions Related To Depository Banking, NEC3
Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures3
Investors, NEC3
Lumber & Wood Products (No Furniture)3
Metal Cans3
Mineral Royalty Traders3
Miscellaneous Business Credit Institution3
Operators of Apartment Buildings3
Paints, Varnishes, Lacquers, Enamels & Allied Prods3
Plastic Material, Synth Resin/Rubber, Cellulos (No Glass)3
Retail-Computer & Computer Software Stores3
Retail-Food Stores3
Rubber & Plastics Footwear3
Services-Employment Agencies3
Services-Engineering, Accounting, Research, Management3
Services-Nursing & Personal Care Facilities3
Services-Skilled Nursing Care Facilities3
Trucking & Courier Services (No Air)3
Wholesale-Hardware3
Wood Household Furniture, (No Upholstered)3

An industry needs at least 3 companies to get a page of its own, so the smallest are not listed here. All companies.