Sandisk (NASDAQ: SNDK) was one of the market's hottest stocks over the past year, and its incredible run became even more impressive after the stock surged following its fourth-quarter earnings report. The semiconductor stock is already up more than 166% in 2026 alone, as of this writing. Sandisk is one of the world's leading makers of NAND (flash) memory. NAND manufacturers dramatically reduced production a few years ago after a price crash, as gross margins turned negative due to oversupply. However, dem ...