Stock futures are looking a bit delicate currently, with the e-minis down more than 10 handles and at one point coming close to testing June 25 lows. Weakness in the global markets begets weakness in the U.S., with the persistent tumbling of Chinese stocks (H Shares joined Shanghai in a bear market recently) and the breakdown in European banks (Deutsche Bank sank almost 5 percent to a record low) continuing to put a hurt on sentiment.

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