China Stock-Index Futures Tumble 10% Before Sharp Rebound: Chart

Another swing has rattled Chinese traders, with CSI 300 futures tumbling by the daily limit before bouncing back. The drop comes two weeks after the Hang Seng China Enterprises Index futures briefly plunged in heavy volume without explanation. The volatility had little impact on the underlying CSI 300, which rose 2.6 percent at the midday break.

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