Tops the list of the 10 largest companies in the world.

The world's largest companies by revenue represent relatively new, faster-growing industries and mature, slower-growing industries ranging from e-commerce and tech gadgets to oil and retail. No matter what, every company is a dominant force in its industry. While each of these companies has seen a change in their business as a result of the COVID-19 pandemic, some companies continue to thrive due to their unique advantages as millions of consumers shelter in place.

1 Walmart Inc. (WMT).

Founded in 1962, Walmart has since grown into one of the world's largest retailers. The company operates discount stores, supercenters, and neighborhood markets, as well as a robust online platform. Walmart sells a wide variety of merchandise including clothing and apparel, household items, books, jewelry, food and beverages, pharmaceutical supplies, and automotive equipment.

2 Amazon.com Inc. (AMZN).

Amazon is the world's largest online retailer by market capitalization. The company started as an online bookstore and has since grown to encompass virtually every category of retail. In addition to selling products through its e-commerce platform, Amazon owns subsidiaries including Whole Foods Market and home security company Ring. Amazon's fastest-growing business areas are cloud computing services, subscription products like Amazon Prime, and streaming movies and other entertainment.

3 China Petroleum and Chemicals Corporation (SNP).

China Petroleum & Chemical is a producer and distributor of a variety of petrochemical and petroleum products. The company's products include gasoline, diesel, kerosene, synthetic rubbers and resins, jet fuel, and chemical fertilizers, among other related offerings. Also known as Sinopec, China Petroleum & Chemical is among the world's largest oil refining, gas, and petrochemical companies. It is administered by the State Council of the People's Republic of China.

4 Petro China Co. Ltd. (PTR).

The Petro China oil and gas company is engaged in the exploration, development, production, and sale of oil. It also manufactures petrochemicals. Petro China is the publicly traded arm of the Chinese state-owned China National Petroleum Corporation.

5 CVS Health Corp. (CVS).

CVS is an integrated provider of pharmaceutical healthcare. The company operates a chain of pharmacies with locations in the US and Puerto Rico. In addition to retail, CVS offers pharmacy benefit management services, mail-order pharmacy services, and disease management programs.

6 Apple Inc. (AAPL).

Apple designs manufacture and markets a wide range of consumer technology products, including smartphones, personal computers, tablets, wearable devices, home entertainment devices, and more. Among the company's most popular products are its iPhone line of smartphones and its line of Mac computers. Apple is also building a fast-growing services business, operating digital content stores, selling streaming video games, and providing streaming services. . . like Apple+, an on-demand entertainment content platform.

7 Royal Dutch Shell PLC (RDS.A).

Headquartered in the Netherlands, Royal Dutch Shell explores, produces, and refines oil through its subsidiary companies. In addition to operating fuel stations around the world, Shell produces and sells fuels, lubricants, and other chemicals.

8 Berkshire Hathaway Inc. (BRK.A).

Berkshire Hathaway is a diversified holding company that owns companies in a wide range of sectors and industries. They include insurance companies, power generation, rail transportation, retail trade, and manufacturing companies, among others. The company also owns a significant portfolio of shares.

9 Toyota Motor Corp. (TM).

Toyota is a Japanese automobile company that manufactures, sells, leases, and repairs passenger cars, trucks, and buses around the world. The company also sells spare parts and equipment and operates financial services. In addition to its core business, Toyota also develops intelligent transportation systems using cruise control and electronic toll systems, and also builds pleasure boats and homes.

10 Volkswagen AG (VWAGY).

Volkswagen Group is the world's largest automaker by vehicle sales.

The German company builds, sells, and repairs luxury and economy cars, sports cars, trucks, and other commercial vehicles. VW's main luxury brand is Audi.