Nvidia (NASDAQ: NVDA) has created numerous millionaires over the past decade, largely due to the booming AI market bolstering its data center business. However, with a substantial market capitalization of $3. 3 trillion, achieving further millionaire-making gains may be challenging in the coming years. While Nvidia remains a strong investment, those looking for transformative gains might consider smaller companies poised for growth. Companies projected to grow their revenues by at least 20% annually over the next few decades could yield significant returns. Three promising AI-focused stocks are Arm Holdings (NASDAQ: ARM), SentinelOne (NYSE: S), and IonQ (NYSE: IONQ). **Arm Holdings: The AI Semiconductor Contender** Arm’s chip designs power 99% of high-end smartphones and various IoT devices, but it does not manufacture chips; instead, it licenses designs to chipmakers. By diversifying into automotive and cloud markets while focusing on AI-oriented designs, Arm aims to boost its revenues, which analysts predict will grow at a 23% CAGR from fiscal 2024 to 2027. Despite its high valuation at nearly 100 times next year’s earnings, its dominance in efficient chip architecture positions it well for future gains. **SentinelOne: The AI Cybersecurity Innovator** SentinelOne’s Singularity XDR platform seeks to automate threat detection and response, reducing reliance on human analysts.

While its growth has slowed, analysts expect a 27% CAGR for revenue from fiscal 2024 to 2027. With a reasonable valuation of 8 times next fiscal year's sales, it could evolve into a major cybersecurity player, particularly appealing as a potential acquisition target. **IonQ: The Quantum Computing Pioneer** IonQ aims to overcome the limitations of quantum computing with its "trapped ion" technology, which miniaturizes qubit processing units, making them less costly and energy-intensive. Although it raised just $22 million in 2023, analysts project a staggering 87% CAGR, reaching $145 million in revenue by 2026. While currently unprofitable and trading at 28 times next year's sales, IonQ offers significant future growth potential. In conclusion, while Nvidia has had a remarkable run, investors looking for substantial returns might find more promising opportunities in smaller, growth-oriented stocks like Arm Holdings, SentinelOne, and IonQ. However, investing advice from sources such as The Motley Fool urges caution; for example, they do not include Arm among their top ten stock picks projected for high returns.