Buy 5 AI-Powered Momentum Stocks for September After a Strong August

U.S. stock markets closed August with solid momentum driven by a revived artificial intelligence trade, prompting Zacks Investment Research to highlight top AI-powered momentum stocks for September. Major indexes showed robust performance, with the S&P 500 and Nasdaq Composite gaining 2.6% and 3.9%, respectively, while both recorded fresh all-time highs during the month. Leading the momentum picks is NVIDIA, which continues to experience surging demand for accelerated computing across hyperscalers, AI clouds, and sovereign buyers. NVIDIA's Data Center segment posted revenues of $89 billion in the second quarter of fiscal 2027, representing a 117% year-over-year surge. The launch of its Vera Rubin architecture is expected to provide significantly improved power efficiency and throughput compared to previous generations, further driving hardware upgrade cycles. Other highlighted momentum plays benefiting from broad AI data center and infrastructure demand include Super Micro Computer, Semtech, SiTime, and Keysight Technologies, as well as ecosystem partners Advanced Micro Devices, Intel, and Arm.