China CSI 300 Falls 1%, Loses 3900 Support as Computing Hardware Rally Fails to Offset Broad Decline

2026-04-04T02:27:38.411Z·1 min read
China's stock markets experienced significant declines with the CSI 300 falling 1% and losing the key 3,900 support level, while the micro-cap index crashed 3.5%.

China's stock markets experienced significant declines with the CSI 300 falling 1% and losing the key 3,900 support level, while the micro-cap index crashed 3.5%.

Market Summary

IndexChangeKey Level
CSI 300-1%Below 3,900 support
Micro-cap index-3.5%Sharp selloff
Computing hardware+StrongCPO/optical sector rally
Power/Coal-WeakSector rotation out

Sector Rotation

The market showed clear sector divergence:

Winners

Losers

Analysis

Structural Shift

The divergence between AI/computing and broad market suggests:

  1. Capital concentration -- money flowing into AI theme, abandoning broader market
  2. Risk bifurcation -- quality AI plays vs speculative micro-caps
  3. Policy sensitivity -- micro-caps vulnerable to regulatory crackdowns

Key Support Lost

CSI 300 losing 3,900 is technically significant:

↗ Original source · 2026-04-04T00:00:00.000Z
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