Memory-related stocks have experienced significant rallies, driven by investor optimism that the industry has moved beyond its traditional boom-bust cycle, largely due to surging demand for high-bandwidth memory (HBM) chips since the launch of ChatGPT in December 2022 [1]. Major producers such as Samsung and SK Hynix have seen their stock prices rise 114% and 186% year-to-date, respectively, while U.S.-based Micron Technology and SanDisk have advanced 141% and 156% in 2026 [1]. This bull run is underpinned by the belief that artificial intelligence (AI) has fundamentally altered the industry's dynamics, creating a structural supply shortage that could keep prices elevated for years [1].
However, market experts caution that the memory sector remains inherently cyclical. William de Gale, portfolio manager at BlueBox Asset Management, emphasized the industry's history of 'enormous ups and downs,' warning that arguments about the end of the memory cycle often precede downturns [1]. He stated, 'In the long run it's a pretty dreadful industry,' suggesting skepticism about the sustainability of current valuations [1].
Innovations such as Google's TurboQuant, unveiled on March 24, could further disrupt the market. TurboQuant is a new compression method that reportedly reduces the memory required to run large language models by six times, potentially slashing demand for AI memory chips [1]. Following TurboQuant's announcement, Deutsche Bank noted a sharp decline in the share prices of leading memory providers and advised investors to 'brace themselves for continuous AI-related disruption,' though the long-term impact of TurboQuant on structural demand remains uncertain [1].
Jon Cunliffe, head of investment office at JM Finn, indicated that production could increase significantly over the next three years, which may ease current supply constraints, especially if AI demand normalizes [1]. He also highlighted that current share prices are based on the assumption that high prices, disciplined investment, and strong profit margins will persist [1].
CONCLUSION
While memory chip stocks have soared on AI-driven demand and supply constraints, experts warn that the industry's cyclical risks and disruptive innovations like Google's TurboQuant could challenge the sustainability of current valuations. Investors are advised to remain cautious as the market navigates potential shifts in demand and supply dynamics.