China Equity Market Down 40% as Domestic Chipmakers Lose Half Their Value in AI Tech Selloff

The Quick Take

• China's equity markets have fallen approximately 40% from recent highs, with domestic chipmakers losing more than 50% of their market value in the global tech selloff.
• China's semiconductor sector faced a double impact: AI speculation premium unwind plus unique US export-control vulnerability not shared by Western tech peers.
• The scale of Chinese chip sector losses rivals the Nasdaq technology bubble correction in severity, raising questions about the pace of state intervention.

China's equity markets have suffered approximately a 40% decline from recent highs, with the country's domestic semiconductor and chipmaker sector bearing the heaviest losses — with some stocks losing more than 50% of their market capitalisation in the global AI technology selloff. The severity of Chinese chip sector losses exceeds comparable drawdowns in US semiconductor names, reflecting a compound risk premium: Chinese chip companies simultaneously face the AI speculation unwind that has affected all global technology stocks, plus specific valuation uncertainty arising from US export control restrictions that limit their access to advanced lithography equipment necessary for next-generation node production.

China's domestic semiconductor champions — including names like SMIC, Hua Hong Semiconductor, and smaller fabless designers — had attracted AI-adjacent premium valuations on the thesis that US export controls would accelerate domestic self-sufficiency and create captive demand for domestic chips. The unwind of this thesis during the global selloff has been particularly violent because the AI self-sufficiency premium was entirely speculative — actual revenue from advanced node production remains years away for most Chinese chipmakers due to equipment access constraints. State fund National Team capital has historically provided floor support for Chinese equities during sharp selloffs, but the scale of this episode has tested the effectiveness of that backstop.

The forward watch is whether Beijing deploys National Team support at current levels or allows further price discovery before intervention. Previous National Team deployments in Chinese equity selloffs — 2015, 2019, 2022 — each had diminishing effectiveness as foreign institutional investors used the artificially-supported liquidity to accelerate exits. For global investors, the key question is whether the Chinese semiconductor sector's fundamental China-domestic AI demand thesis is intact despite the equity price correction, or whether the selloff reflects a genuine reassessment of how long the self-sufficiency pathway will take. Monitor SMIC revenue guidance, Hua Hong booking trends, and PBOC monetary policy response as indicators of the post-selloff recovery trajectory.

Synthesized from 1 source.