Options traders had been unusually bullish ahead of the report. At the International Securities Exchange (ISE), Cboe Options Exchange (CBOE), and Nasdaq OMX PHLX (PHLX), Walmart's 50-day call/put volume ratio of 2.38 ranks higher than 87% of readings from the past year, showing calls have been picked up at a much faster- than-usual pace over the past 10 weeks. Should these losses hold, WMT will erase its 2.6% year-to-date lead and open at its lowest level since November. Prior to this price action, familiar ...