Global AI Stocks: 9 Biggest AI Companies in 2026
As the artificial intelligence (AI) market continues to grow, there are many AI stocks for investors to choose from on top exchanges like the NASDAQ, TSX and ASX.
AI technology has made strong inroads into a wide variety of key industries, including logistics, manufacturing, finance, healthcare, customer service and cybersecurity.
While AI has been around for a long time, this explosion in popularity is due to advancements in generative AI, starting with the release of OpenAI’s ChatGPT. Since then, many major tech firms entered the space with their own generative AI offerings, or now include AI technology in their own innovative products.
A McKinsey report states: “AI is a widely applicable, general-purpose technology with use cases in every industry and business function — and thus lots of innovation and interest — and it is scaling rapidly across the business landscape.”
Here the Investing News Network profiles some of the biggest AI stocks by market cap on US, Canadian and Australian stock exchanges. Data for this AI stocks list was gathered on August 19, 2026, using TradingView’s stock screener.
American AI stocks
There are around 90,000 AI companies worldwide, of which 32 percent are headquartered in the US, according to Ascendix. One of the major factors fueling growth in the American AI market, states Statista, is “the growing investments and partnerships among technology companies, research institutions, and governments.”
Below are three of the top US AI stocks by market cap.
For more US AI stocks, check out our list of 12 generative AI stocks and 5 AI ETFs.
Market cap: US$5.31 trillion
The global leader in graphics processing unit (GPU) technology, NVIDIA is designing specialized chips used to train AI and machine-learning models for laptops, workstations, mobile devices, notebooks and PCs. The company is partnering with a number of big-name firms to help roll out AI products and AI infrastructure around the world.
In early 2024, Taiwan Semiconductor Manufacturing Company (NYSE:TSM) and NVIDIA unveiled the world’s first multi-die chip specifically designed for AI applications: the Blackwell GPU. Blackwell’s architecture allows for the increased processing power needed to train larger and more complex AI models.
In September 2025, NVIDIA announced a US$100 billion partnership with OpenAI that will see NVIDIA fund a massive data center buildout that will become the backbone of OpenAI’s superintelligence ambitions.
In August 2026, the company partnered with several major investment firms, including BlackRock (NYSE:BLK), Brookfield Asset Management (TSX:BAM,NYSE:BAM) and Goldman Sachs (NYSE:GS), to create capital pools worth more than US$500 billion to fund the buildout of AI infrastructure powered by NVIDIA technology.