Shares of several major semiconductor and memory-related companies rise sharply, with gains reported up to about 23%, following a warning from Samsung Electronics. Multiple outlets attribute the market reaction to Samsung’s indication that the ongoing shortage in memory components—including DRAM, RAM and other memory types—may continue through 2028. The reported surge includes companies tied to memory manufacturing and supply, such as SanDisk and Micron, as well as broader semiconductor players such as AMD and Intel. Investors appear to be responding to expectations that persistent scarcity could support pricing, margins, and demand visibility for suppliers over the coming years. The articles focus on the magnitude of the stock moves and the timing of the underlying supply forecast from Samsung, presenting the warning as the primary catalyst. The reports do not cite changes in company fundamentals or new product announcements by the named firms, instead linking the rally to the outlook for the memory market’s duration.