Here are US Top 7 Companies by Market Cap (Stocks Listed on NASDAQ Stock Market). Most of these Biggest / Largest Companies are in IT, Technology, Finance and Electronics Business.

Apple Inc Ranking: 1 Business: Smartphone, Tablet, Laptop, PC, Smart Watch, Wearables and Accessories, Music products. Listed in NASDAQ and NYSE as: AAPL Market Cap in Billion US Dollar: 2,510

Microsoft Corporation Ranking: 2 Business: Software, Windows Operating System, CRM Applications, Bing Search Engine, Technology Solutions, Cloud Computing. Listed in NASDAQ and NYSE as: MSFT Market Capitalization in Billion US Dollar: 2,268

ALPHABET Inc Ranking: 3 Business: Parent company of Google Search Engine, Technology, Investment Capital, Cloud Computing. Listed in NASDAQ and NYSE as: GOOG Market Cap in Billion US Dollar: 1,933

Amazon.com Ranking: 4 Business: e-Commerce, Technology, Software and IT Listed in NASDAQ and NYSE as: AMZN Market Capitalization in Billion US Dollar: 1,757

Facebook Inc Ranking: 5 Business: Social Media Network, Technology, Software and IT Listed in NASDAQ and NYSE as: FB Market Cap in Billion US Dollar: 1,069

Tesla Inc Ranking: 6 Business: Electric Automobile, Solar Panel, Energy Storage Products, Battery Cells. Listed in NASDAQ and NYSE as: TSLA Market Capitalization in Billion US Dollar: 736

Berkshire Hathaway – Ranking: 7 – Business: Investment in Stocks, Property and Real Estate, Insurance and Utilities, Food and Restaurant, Aerospace, Automotive, Media, Toys and Sporting goods, Consumer Electronics – Listed in NASDAQ and NYSE as: BKR/A – Market Cap in Billion US Dollar: 646

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