Concentration of largest firms by industry in the U.S. 2017| ��ƽ��

Combined market share of the largest firms in their respective industries in the United States as of 2017

Characteristic	Top 4	Top 8	Top 20	Top 50
Utilities	16.2%	26.4%	49.3%	71.6%
Information	25.7%	36.4%	51%	61.7%
Mining, quarrying, and oil and gas extraction	10.7%	19.8%	33.9%	50.3%
Finance and insurance	9.3%	16.2%	29%	45.7%
Transportation and warehousing	17.9%	26.4%	34.2%	42.8%
Retail trade	15%	21.7%	30%	38.9%
Manufacturing	6.4%	10.3%	17.8%	28.5%
Wholesale trade	6.2%	9.9%	18.6%	28.1%
Administrative and support services	10.6%	14.4%	20.8%	27.7%
Real estate and rental and leasing	5.8%	9.2%	16.2%	24.2%
Arts, entertainment, and recreation	7.6%	10.1%	15.6%	22.7%
Educational services	8.1%	10.8%	15.2%	21.7%
Accommodation and food services	5.7%	8.9%	13.6%	19.2%
Health care and social assistance	4.3%	7%	11.8%	18.8%
Professional, scientific, and technical services	3.4%	6.1%	11.3%	17.8%
Other services	2.9%	4.6%	7.9%	12.5%
Construction	2.2%	3.4%	6.4%	10.6%

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Release date

October 2022

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Region

United States

Survey time period

2017

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The three most concentrated industries in the U.S. as of 2017, in terms of the market share controlled by the top four firms in the industry, were information services, transportation and warehousing, and the utilities sector. Despite fears of growing market concentration in the U.S., none of these industries have a market share for their top four firms of greater than 30 percent. Industries which benefit from economies of scale and network effects tend to be the most concentrated in terms of market share, while industries which are more localized such as construction or accommodation and food services come towards the bottom of the list.