TheMarketAI SC 15 Index Extends Winning Streak in September with 6.4% Gain
- Oct 3, 2025
- 2 min read
TheMarketAI Small-Cap 15 Index continued its strong momentum into September, advancing 6.4%for the month and closing at 127.12, up from 119.47 at the end of August.
The proprietary index—developed by TheMarketAI.com to spotlight under-the-radar AI-driven innovators in the small-cap universe—has now delivered double-digit cumulative growth in just its third month of tracking.
September Highlights
Total Market Cap: $149.5 billion across the 15 constituents
Top Performers: Credo Technology Group (CRDO) and IonQ (IONQ) continued to lead gains, supported by investor optimism around quantum computing and AI hardware integration.
Strong Software Momentum: Commvault Systems (CVLT) and Clearwater Analytics (CWAN) also saw notable appreciation, reflecting renewed confidence in AI-enhanced data management and analytics platforms.
Hardware Resilience: Rambus (RMBS) maintained solid performance, benefiting from its exposure to memory interface and AI infrastructure trends.
TheMarketAI Take
September’s advance reinforces what the index is designed to capture: AI’s next generation of growth is no longer confined to mega-cap names. While the broader market showed signs of fatigue, our AI small-cap universe continued to outpace major benchmarks—showing that innovation leadership is increasingly distributed across a wider field of players.
As the AI boom filters into second-tier enablers and niche software leaders, TheMarketAI SC 15 Index continues to provide a forward-looking lens on where the next breakthroughs—and investment opportunities—are emerging.
Ticker | Company Name | Market Cap Base (B USD) | Weight (%) | Market CAP (Sep 30, 2025) |
CRDO | Credo Technology Group | 15.72 | 21.00 | 25.19 |
IonQ Inc | 11.24 | 15.00 | 21.73 | |
CVLT | Commvault Systems Inc | 7.76 | 10.40 | 8.45 |
RMBS | Rambus Inc | 6.88 | 9.20 | 11.21 |
CWAN | Clearwater Analytics | 6.22 | 8.30 | 5.89 |
ITRI | Itron Inc | 6.00 | 8.00 | 5.69 |
IDCC | InterDigital Inc | 5.82 | 7.80 | 8.91 |
QBTS | D-Wave Quantum Inc | 4.58 | 6.10 | 9.15 |
SOUN | SoundHound AI Inc | 4.31 | 5.80 | 6.49 |
AI | C3.ai Inc | 3.30 | 4.40 | 2.36 |
BBAI | BigBear.ai Holdings Inc | 1.98 | 2.60 | 2.49 |
CCSI | Consensus Cloud Solutions | 0.45 | 0.60 | 0.56 |
MVIS | MicroVision Inc | 0.28 | 0.40 | 0.38 |
AISP | Airship AI Holdings Inc | 0.19 | 0.25 | 0.24 |
EGAN | eGain Corp | 0.17 | 0.23 | 0.16 |
