Semiconductor stocks have stalled, with investors debating a potential glut in the cyclical memory‑chip sector. Samsung Electronics is down a third from its June high, SK Hynix shares fell almost 40%, and Micron has slipped more than 30%. Volatility underscores the clash between AI‑driven demand for DRAM and the massive capital outlays to increase supply.

The race is now a high‑stakes battle. SK Hynix plans to double capacity over five years and triple it by 2034, with a $739bn investment package that includes Won600tn for DRAM plants in Yongin and Won400tn for a new cluster. Kwon Seok‑joon warns that if AI spending falters, the industry could oversupply by 2028.

Michael Burry’s Substack short on Micron signals the cycle’s fragility, echoing Daniel Kim’s caution that HBM’s wafer penalty is worsening while DRAM scaling grows harder. Chang Xin Memory Technologies is expanding to 500k wafers/month by 2028, and China could add 30% of new capacity, a decisive variable.

The outcome will hinge on whether hyperscalers sustain aggressive AI spending or whether supply outpaces demand, leaving investors scrambling for stability.