Top 3 Most Valuable Publicly Traded Companies by Market Cap

NVIDIA, Apple, and Alphabet (Google) are among the top three most valuable publicly traded companies by market capitalization as of September 2026.

Sources

• Largest Companies by Market Cap in 2026 - AlphaSense
• The Largest Companies by Market Cap in September 2026 - The Motley Fool
• A timeline of the world's most valuable companies by market capitalization, showing how industrial giants, banks, oil firms, and tech leaders rose over time - Facebook
• Top 10 Largest Companies by Market Capitalisation 2024
• List of public corporations by market capitalization - Wikipedia

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