You might know Sandisk for its USB drives or digital camera memory cards, but the company in 2026 has found itself at the center of the stock market's hottest trade. AI has spurred a memory super cycle , fueling massive demand for memory and data storage solutions. This has turned into huge gains for memory chipmakers like Sandisk. The memory chip stock's monumental rise has earned it the top spot as the S&P 500's top gainer year-to-date, outpacing AI chip darling Nvidia's gains in its 2023 and