SKHX Slides to a Fresh Low as China's CXMT IPO Reignites DRAM Oversupply Fears

The China Overhang

The catalyst that turned a wobble into a rout is a competitor's IPO, not anything SK Hynix did. ChangXin Memory Technologies — CXMT, China's leading DRAM maker — priced its Shanghai STAR Market listing at 8.66 yuan per share, upsizing the deal to roughly 66.6 billion yuan (~$9.8 billion) from an original target near $4.3 billion. That makes it the STAR board's second-largest IPO ever, behind only SMIC in 2020, with a listing slated for July 27 and proceeds earmarked squarely at DRAM technology upgrades, new wafer lines, and R&D.

That's the part that spooks the trade. Samsung, SK Hynix, and Micron together control roughly 90% of the DRAM market, and CXMT — around 7.67% of global DRAM revenue in Q4 2025, already fourth worldwide — is about to raise ~$10 billion explicitly to add capacity. In a market this cyclical, a domestic Chinese champion with a decade-long lockup pledge and state backing is exactly the kind of structural supply story that compresses forward pricing assumptions. The selloff hit the whole memory complex, with SK Hynix and SanDisk each down about 7% and Micron off roughly 5% as the news landed. The bull rebuttal is real but partial: export controls keep CXMT largely out of the most advanced AI-server memory, so its capacity threatens commodity DRAM more than the HBM stack driving Hynix's margins. The market is repricing the tail risk anyway.

From Record Debut to Record Rout

This is landing on an already-fragile setup. Just a week ago SK Hynix pulled off the largest U.S. listing ever by a foreign company, selling 177.9 million ADS at $149 to raise $26.5 billion — second only to SpaceX in U.S. history. Shares popped nearly 13% on day one. Then the air came out fast: the stock cratered more than 15% the following Monday, its biggest one-day drop on record, dragging the KOSPI down about 9% and tripping a 20-minute trading halt as Seoul investors cashed out a rally that had run roughly 229% year-to-date.

When a name is up that much into a marquee liquidity event, the debut becomes the exit. Layer on a South Korean brokerage note warning that current-quarter operating profit may miss estimates, plus the TSMC-driven capex scare that swept the sector earlier in the week, and you have a textbook crowded-trade unwind. The CXMT headline didn't create the selling — it gave an already-nervous book a fresh, specific reason to keep hitting bids.

The Setup Into Earnings

The tape confirms the shift in tone. SK Hynix's U.S. ADRs printed a fresh 12-month low near $145.57 on July 17 before steadying around $159 — a striking round-trip for a stock that debuted at $149 barely a week earlier. Notably, the sell-side hasn't blinked on the fundamentals: consensus still carries a Strong Buy with an average target around $330, implying the desk views this as a positioning flush rather than a broken thesis.

For SKHX perp traders, the nuance matters. This market tracks one SK Hynix common share converted from KRW to USD, so you're trading the Seoul tape and the won together — a different exposure than the U.S. ADR line, and one that reflects Korean-session flows and FX rather than after-hours U.S. price discovery. The next hard catalyst is close: SK Hynix reports its Q2 results with a conference call set for July 29, with the Korean release expected days earlier. Recent quarters have beaten on sharp DRAM and NAND price increases, so the print itself may be strong. The question the CXMT news forces onto the call is forward guidance — specifically, what management says about pricing and supply as China's newest DRAM heavyweight lines up its cash.