Market Updates

The I/O Fund’s Top 15 AI Stocks for Q4 2025

Written by

Beth Kindig

Founder, CEO and Lead Technology Analyst

Published: October 28, 2025

Last Updated: October 28, 2025

Last quarter, I began providing a comprehensive ranking of the top AI stocks in our universe. Our portfolio benefited from this exercise, and we hope yours did too. The report below is designed to be objective in a no holds barred approach. Because we manage our own money full-time, we are laser-focused on ways to improve on a quarterly basis. Similar to the Q3 2025 report, the analysis below tops out at over 16,000 words, totals 43 pages and took three weeks to write. Even if we’ve held a stock for years, we update the investment thesis and re-examine the fundamentals. There is no stock that is immune to being cut from our portfolio if it cannot prove it’s one of the best AI stocks at this moment. Vice versa, to be added for the first time, a stock must be able to prove it can hold its own among already-strong choices.

Last quarter, I began providing a comprehensive ranking of the top AI stocks in our universe. Our portfolio benefited from this exercise, and we hope yours did too. The report below is designed to be objective in a no holds barred approach. Because we manage our own money full-time, we are laser-focused on ways to improve on a quarterly basis. Similar to the Q3 2025 report, the analysis below tops out at over 16,000 words, totals 43 pages and took three weeks to write. Even if we’ve held a stock for years, we update the investment thesis and re-examine the fundamentals. There is no stock that is immune to being cut from our portfolio if it cannot prove it’s one of the best AI stocks at this moment. Vice versa, to be added for the first time, a stock must be able to prove it can hold its own among already-strong choices.

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