China's Stocks Fall to One-Month Low as Material Producers Drop

  • Shanghai shares extend loss after BOJ move, H shares pare gain
  • Commodity prices slump as exchanges intensify trading curbs
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China’s stocks fell to a one-month low as a continuing clampdown on commodity futures trading drove down raw-material prices and Japan surprised global markets by holding off from expanding monetary stimulus.

The Shanghai Composite Index slid 0.3 percent in trading volumes that were 34 percent below the 30-day average. A measure of material companies slumped the most among industrial groups after the Dalian Commodity Exchange said overnight it intended to strictly curb excessive speculation on coking coal futures contracts. The Hang Seng China Enterprises index pared gains after the Bank of Japan’s decision fueled a rally in the yen, which could make the nation’s exports more expensive.