Moderately bullish activity in Costco (COST), with shares up $45.98, or 5.21%, near $928.55. Options volume more than double the daily average with 75k contracts traded and calls leading puts for a put/call ratio of 0.49, compared to a typical level near 1.71. Implied volatility (IV30) is higher by 0.9 points near 21.66,and below the 52wk median, suggesting an expected daily move of $12.67. Put-call skew steepened, indicating increased demand for downside protection, following an upgrade to Outperform at Mizuho.
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