Industry

HHI

Largest firms

PC microprocessor

6,190

Intel, AMD

Aircraft

5,008

Boeing, Airbus

Operating systems

4,809

Windows, MacOS, Linux

Smartphone O.S.

4,326

Android, Apple

Warehouse stores

3,730

Costco, Sam’s Club

Game consoles

3,706

Nintendo, Xbox, Playstation

Cell phone carriers

2,768

Verizon, AT&T, Sprint, T-Mobile

Tablets

2,306

Apple, Samsung, Amazon ASUS

Diamonds

2,029

De Beers, Alrosa, Rio Tinto

Automobiles

1,131

GM, Ford, Toyota, Chrysler, Honda, Nissan

Sources: www.cpubenchmark.net; thomsonreuters.com; www.statista.com; Neilson; Reuters; Forbes; Edmunds Auto.