Shares of major memory-chip companies rallied with double-digit gains this week following a period of poor performance [1], [2].
The surge reflects a critical shift in investor sentiment regarding artificial intelligence spending. As big-tech firms like Microsoft report positive earnings, confidence is returning to the hardware providers that enable AI infrastructure.
The rally began on Thursday, July 30, 2026, and continued into pre-market trading on Friday, July 31, 2026 [1]. Memory-chip stocks, including Micron Technology and SanDisk, saw share price increases of 10% or more [2]. These companies are essential to the AI boom because large language models require massive amounts of high-speed memory to function.
This momentum extended to international markets, particularly in South Korea. The KOSPI index jumped almost 18% on Friday [1]. This spike was driven by the performance of regional giants such as Samsung Electronics and SK Hynix, which operate alongside U.S. firms to dominate the global memory market [1], [2].
Analysts said renewed optimism about AI spending and fresh guidance from the chip makers themselves are the primary drivers of the recovery [1], [2]. While some market observers said different firms like Lam Research may be the ultimate winners of the AI memory boom, the immediate gains were concentrated among the primary chip producers [1], [2].
The recovery follows a week of volatility where investors questioned the immediate returns on AI investments. The recent pivot suggests that the market now views the demand for memory chips as a sustained necessity rather than a temporary bubble.
“Memory-chip stocks posted double-digit gains”
This rally indicates that the market is decoupling the ability of AI to generate software revenue from the physical necessity of the hardware. By rewarding memory-chip makers after a slump, investors are signaling that the physical build-out of AI data centers remains a priority regardless of short-term software volatility.
