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Investing.com says California ranked first in its AI Investing Index, which analyzed 12 months of U.S. investor activity in AI-assisted research and AI-focused stocks. Ohio and Colorado tied for second; Florida led in AI research activity, while Pennsylvania led in engagement with AI-focused stocks. The index measures activity relative to each state’s audience size, not investment performance.
California ranked first in Investing.com’s new analysis of where U.S. investors use AI in investment decisions, while Ohio and Colorado tied for second. The index draws on 12 months of user activity and considers both AI-assisted investment research and engagement with AI-focused stocks, adjusted for each state’s audience size.
Florida and Texas rounded out the top five, according to Investing.com. New York ranked 13th, and New Jersey ranked 27th. The report also lists Utah, Hawaii, Michigan and Minnesota among the top 10, showing that high activity was not limited to states traditionally associated with finance or technology.
The two activity measures produced different state leaders. Florida had the highest AI research activity among the states included, while Pennsylvania led in engagement with AI-focused stocks. Investing.com said the research activity it examined covered topics including stock statistics, technical analysis, company news, economic events, dividends and financial statements.
The report describes user activity on Investing.com; it does not establish how many people across each state use AI, whether AI changed their decisions, or whether those decisions performed well. The ranking is adjusted for audience size, but the source material does not provide the underlying state-level counts or full calculation details.
AI Investing Beyond Wall Street
The ranking offers a snapshot of where Investing.com users are engaging with AI for investment-related activity. The strong placements for Ohio and Colorado, alongside Florida and Texas, suggest the activity recorded by the platform is geographically broader than the familiar financial hubs of New York and California’s technology centers. It does not, by itself, show that investors in those states are more successful or that AI is improving investment outcomes.
For retail investors, the distinction between the index’s measures matters. Research activity and interest in AI-focused stocks are not the same as using an AI tool to make a trade, and neither measure indicates whether a user followed an AI-generated suggestion. The data may help describe changing research habits, but it should not be read as evidence of returns, accuracy or a shift in market performance.
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How the Index Measures Activity
Investing.com says its index combines AI use for investment research with engagement with AI-focused stocks, then adjusts activity for audience size in each state. The report does not provide, in the supplied material, the exact weighting assigned to each component or a detailed definition of what qualifies as AI-focused stock engagement.
The release also cites a separate March 2026 survey, which found that 62% of U.S. retail investors surveyed had used AI to help inform an investment decision and that more than half expected their use to increase. Those figures come from a survey, not from the state index, and the release does not identify the survey sample size or provide further methodological detail.
Internationally, the report says the United States ranked 19th among 66 qualifying countries. Italy, Poland, Israel, Chile and Argentina were the global top five. That country-level result uses the broader international analysis and does not change the state ranking.
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What the State Ranking Cannot Show
The report does not disclose the precise 12-month measurement dates, state-level activity totals, or enough detail to reproduce the index calculation from the supplied release. It also does not say how Investing.com distinguishes AI-assisted research from other site activity or how it defines engagement with AI-focused stocks.
The ranking cannot establish the number or share of all investors using AI in each state, because it reflects activity among Investing.com’s users. Nor does it show whether investors acted on AI output, whether the tools provided accurate information, or what financial results followed. The survey’s 62% figure is separate, and the release provides limited information about its methodology.
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Full Data and Method Details
Investing.com directed readers to its full U.S. state ranking and underlying AI Investing Index data. Those materials may provide additional detail on the scores, state comparisons and calculation method. The release does not announce a date for a follow-up report or specify when the index will be updated, so the timing of any new ranking remains unknown.
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Key Questions
Which state ranked first for AI investing activity?
California ranked first in Investing.com’s index, which combines AI-related research activity and engagement with AI-focused stocks, adjusted for state audience size.
Which states followed California?
Ohio and Colorado tied for second, followed by Florida and Texas in the top five.
What did the index measure?
Investing.com analyzed 12 months of user activity involving AI-assisted investment research and engagement with AI-focused stocks. The release does not provide full calculation details or exact measurement dates.
Does a high ranking mean investors earned better returns?
No. The index reports platform activity, not investment performance. It does not show whether users followed AI-generated information or whether their decisions produced gains or losses.
How did New York rank?
New York ranked 13th, according to Investing.com. New Jersey ranked 27th.
Source: primary
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