Among the underlying components of the S&P 500 index, we saw noteworthy options trading volume today in Whole Foods Market, Inc. (NASD: WFM), where a total of 41,774 contracts have traded so far, representing approximately 4.2 million underlying shares. That amounts to about 83.8% of WFM's average daily trading volume over the past month of 5.0 million shares. Particularly high volume was seen for the $28.50 strike call option expiring October 07, 2016, with 6,035 contracts trading so far today, representing approximately 603,500 underlying shares of WFM. Below is a chart showing WFM's trailing twelve month trading history, with the $28.50 strike highlighted in orange:
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