[U.S. stock market closed lower this morning, SanDisk up over 7%, Broadcom down nearly 6%] BlockBeats News, on August 15, U.S. stocks closed on Friday with the Dow Jones Industrial Average preliminarily down 0.20%, the S&P 500 Index down 0.17%, and the Nasdaq Composite Index down 0.28%. Drone technology company Unusual Machines (UMAC.N) surged 24.83%. Storage concept stocks maintained their upward momentum, with SanDisk (SNDK.O) up 7.39% and Micron Technology (MU.O) up 2.3%. Semiconductor stocks showed mixed performance, with AMD (AMD.O) up 6.5%, Broadcom (AVGO.O) down 5.94%, and Applied Materials (AMAT.O) down 5.12%.