With its biggest intraday drop in months immediately followed by its biggest intraday gain, Sandisk Corporation (NASDAQ: SNDK) has entered a new phase of price action. The stock had already been crowned one of the standout winners of 2025 before adding nearly 200% in the first few weeks of 2026. At one point, it was up about 1,800% since its spinoff from Western Digital.
However, those kinds of gains do not come quietly and are rarely one-directional.
