US stock indices close mixed: SanDisk (SNDK) up 6.95%, Micron (MU) up 5.10%

The three major US stock indices closed mixed on September 23. The Dow Jones Industrial Average fell 0.32%, while the Nasdaq rose 0.80% and the S&P 500 gained 0.05%. Notable stocks included SanDisk (SNDK) rising 6.95%, Micron (MU) up 5.10%, Riot Platforms (RIOT) up 3.58%, SKHY up 3.32%, MARA up 2.55%, and Intel (INTC) up 2.11%.