It's difficult to identify the top 10 AI companies based on stock performance alone, as the stock market can be influenced by a wide range of factors beyond a company's focus on AI. However, here is a list of some well-known companies that are actively involved in AI and machine learning research and development:

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Alphabet (Google): Google is a leader in the field of AI and has made significant investments in machine learning and deep learning research.

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Amazon: Amazon uses machine learning and AI in a variety of ways, including for its recommendation engines and in its AWS cloud computing platform.

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Apple: Apple has made significant investments in AI and machine learning, including acquiring several AI-focused startups.

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Meta platforms: Facebook uses AI and machine learning in a variety of ways, including for image and video recognition and for personalized news feed recommendations.

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Microsoft: Microsoft is actively involved in AI and machine learning research and has developed several AI-powered products and services, including its Cortana personal assistant and Azure Machine Learning platform.

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NVIDIA: NVIDIA is a leading provider of graphics processing units (GPUs) that are used for deep learning and other AI applications.

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IBM: IBM has a long history of involvement in AI research and development and offers a range of AI-powered products and services, including its Watson platform.

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Intel: Intel has made significant investments in AI and machine learning and offers a range of AI-focused hardware and software products.

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Salesforce: Salesforce uses AI and machine learning in a variety of ways, including for its customer relationship management (CRM) platform.

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Adobe: Adobe uses AI and machine learning in its Creative Cloud platform for tasks such as image and video editing.