Changxin Technology, referred to in the source as CXMT, surged 465.8% on its first trading day on Shanghai’s STAR Market, with turnover topping RMB 140 billion and market capitalization reaching RMB 3.28 trillion. The debut, according to Odaily, set several A-share records, including the first technology stock to open above RMB 3 trillion in market value and the first stock to post more than RMB 100 billion in single-day turnover while also recording turnover above 50%. Views on where the stock goes next are sharply divided. Nomura assigned a buy rating and a RMB 116 target price, implying a valuation of about RMB 7.76 trillion. Northeast Securities took a more restrained stance, outlining valuation references ranging from RMB 3.22 trillion to RMB 5.7 trillion. Fund managers including ChinaAMC and Harvest also warned that ETF indicative values could diverge from actual NAV because IPO allocations were still marked at the issue price. Odaily also cited HyperInsight data showing split positioning on Hyperliquid before the listing: labeled wallets from the U.S., Hong Kong and mainland China were net long, while South Korean tagged wallets were the main short side. Separately, Milk Road AI analyst Melvin argued the stock’s sharp rise does not change the global DRAM and HBM supply picture in the near term.

Several ETF managers, including ChinaAMC and Harvest Fund, issued risk alerts ahead of Changxin Technology’s listing, saying some of their ETFs took part in the IPO subscription and are valuing the stock at its offer price. The managers said the indicative optimized portfolio value, or IOPV, only reflects the offer price and does not capture market-price swings on the first trading day. That means an ETF’s actual per-share net asset value could diverge from its IOPV once the stock starts trading. An ETF fund manager said ETF IPO participation is commonly carried out alongside active equity funds, while IOPV is calculated strictly from the PCF basket and excludes newly listed restricted, non-index constituents. If Changxin Technology jumps on its debut, the actual NAV of ETFs that received allocations could be slightly higher than the IOPV. The manager added that such a gap could give rise to arbitrage strategies, including buying the ETF while hedging with derivatives to isolate the excess exposure created by the divergence.