Skepticism can also be seen in the action on the International Securities Exchange (ISE), Chicago Board Options Exchange (CBOE), and the NASDAQ OMX PHLX (PHLX).

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Similarly, puts have been bought to open at a notable clip at the International Securities Exchange (ISE), Chicago Board Options Exchange (CBOE), and NASDAQ OMX PHLX (PHLX).

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During the past 10 days, speculators have bought to open 1.51 puts for every call on the International Securities Exchange (ISE), Chicago Board Options Exchange (CBOE), and NASDAQ OMX PHLX (PHLX).

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