CXMT's Pre-IPO Perp Sheds Part of Its 526% Premium

The Premium Is Deflating, Not the Company

A 12.76% drop to $7.25 looks violent in isolation. It isn't — it's a partial mean-reversion off an absurd starting point. Near $8, the perp implied a roughly $535 billion valuation, about 526% above the IPO. Even after this pullback, $7.25 across CXMT's expected 66.881 billion post-IPO shares still pencils out to about $485 billion — roughly 5.6x the ~$85 billion valuation the IPO assigns the company.

No adverse CXMT headline drove this. If anything, the fundamental picture got stronger: the Shanghai IPO is heavily oversubscribed, with retail lottery odds around 0.45% — nearly ten times the usual STAR Market win rate. What's cooling is the price of access, not the market's view of the business.

What the IPO Actually Says

ChangXin priced its STAR Market IPO at RMB 8.66 per share on July 14 — a RMB 579.2 billion (~$85 billion) valuation and an ~$8.55 billion raise, rising toward $9.8 billion if the greenshoe is exercised. That makes it the largest Chinese chip IPO ever and the second-biggest listing in STAR Market history, behind only SMIC's 2020 debut.

The demand has a real engine behind it. CXMT is China's largest DRAM maker and the world's fourth-largest, and first-quarter 2026 revenue reportedly jumped roughly 700% year over year into the memory upcycle. Subscriptions opened July 16, with shares set to begin trading July 27. None of that changed in the last 24 hours — which is exactly why the move reads as premium mechanics, not a re-rate.

Why the Basis Has One Way to Resolve

The perp references one CXMT A-share in USD terms. Right now there is no live share price to anchor to, so the contract has been pricing pure access: most buyers are locked out of the STAR listing by onshore eligibility rules, and the perp is one of the only synthetic routes into the name. Scarcity, not a debut forecast, is what carried it to a 526% premium.

July 27 removes the ambiguity. Once the stock trades in Shanghai, the oracle converts the real RMB price to USD, and the basis stops being a story and becomes arithmetic. At an IPO price near $1.29 per share in dollar terms, the perp changing hands around $7.25 still sits ~5.6x above the actual number it's supposed to converge toward. Funding costs on a structurally long, premium-priced perp and a thin order book add gravity. This 12.76% slide is the first crack in a gap that has to close from one side.