Zhengzhou Commodity Exchange Adjusts Margins, Price Limits for Mid-Autumn and National Day Holidays 2026

This is routine pre-holiday risk management by the Zhengzhou exchange, but the structure is telling: the tighter 9% margin and 8% price limit apply to the 2611 contracts, while the nearby 2610 contracts get only a 9% price limit. That asymmetry suggests the exchange is bracing for volatility concentrated in the post-holiday contract months across the PTA, methanol and paraxylene chains. The practical effect is higher capital costs and narrower daily trading bands for anyone holding those positions through the Mid-Autumn and National Day break. Whether other Chinese commodity exchanges mirror these parameters is the open question.