TheMarketAI SC 15 Index notched another strong month in September 2025, rising 6.4% to close at 127.12, extending its winning streak from August’s standout 7.7% gain. The total market cap of the 15 AI-focused small caps now tops $149 billion, led by Credo Technology Group and IonQ, which continue to anchor the index’s performance. The results highlight ongoing investor enthusiasm for the next generation of AI enablers—from hardware innovators to niche software platforms—posit

n just its second month, the TheMarketAI SC 15 Index surged 7.67% — trouncing the Nasdaq, NVIDIA, and every major AI ETF. Once again, small-cap AI stocks are showing that the next wave of innovation may not come from Big Tech.

We’re launching the TheMarketAI SC 15 Index, a market-cap weighted benchmark tracking 15 AI-focused small-cap stocks from the Russell 2000 tech sector. It’s our way of spotlighting emerging AI innovators beyond Big Tech — follow along as we explore how this unique slice of the market performs each month.

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