Why SK Hynix's Record $26.5B IPO Was Followed by a 15% Crash, Samsung Entered a Bear Market, and China's CXMT Launched a $4.3B IPO at the Same Time

But the very next trading day in Seoul (July 13), the stock crashed 15.4% — its biggest one-day decline on record . The KOSPI fell 9%, breaking below 7,000 and triggering a 20-minute trading halt . This was not a company-specific failure; it was a profit-taking avalanche. Korean investors had ridden a massive pre-IPO rally and used the Nasdaq hype to exit . A broader KOSPI crash on June 23 (triggering double circuit breakers) had already wiped 12% off SK Hynix and Samsung in a single session, driven by the forced unwind of retail-heavy single-stock leverage ETFs .

Samsung: Bear-Market Selloff Despite Record Profits

Samsung reported a 19-fold surge in quarterly operating profit in early July, yet its shares fell 7–8% on the news . The trigger: results "failed to satisfy" investors who had bid up valuations to extreme levels on AI hype . Samsung, SK Hynix, and Micron all entered bear-market territory (20%+ below recent highs) on the same day Samsung reported its best quarter ever . Samsung's stock has more than doubled over the past year, and analysts at Goldman Sachs estimated that nearly 90% of those gains were generated by AI-driven sentiment . The selloff is a textbook "sell the news" rotation out of crowded tech trades .

CXMT: $4.3 Billion STAR Market IPO — A Different Game

CXMT (ChangXin Memory Technologies) launched a $4.3 billion IPO on Shanghai's STAR Market, the second-largest in that board's history . It controls ~7.67% of global DRAM and is seen as a state-backed national champion closing the technology gap with Korean leaders .

Key difference: CXMT is listing on a domestic, China-controlled exchange where retail and institutional investors are largely insulated from global capital flows. Its IPO coincides exactly with the Korean memory selloff — but CXMT faces a different risk: US export controls could cut off its access to advanced chipmaking equipment, a threat detailed in its prospectus . The company, already blacklisted by the US, plans to use the proceeds to upgrade production lines and technologies .

The Bifurcation in One Chart

Why the divergence matters: South Korean memory giants are being repriced because their valuations overshot what even historic earnings could justify — a classic AI-bubble correction . CXMT, meanwhile, is entering the public market at a moment when China is doubling down on semiconductor self-sufficiency, and its IPO is structured to attract domestic capital with limited exposure to the global rotation hitting Samsung and SK Hynix . The two stories reflect not different chip fundamentals, but different capital-market ecosystems — one globally integrated and punishing high expectations, the other politically driven and still in growth-narrative mode.