Among the underlying components of the S&P 500 index, we saw noteworthy options trading volume today in GameStop Corp (NYSE: GME), where a total of 7,959 contracts have traded so far, representing approximately 795,900 underlying shares. That amounts to about 57.2% of GME's average daily trading volume over the past month of 1.4 million shares. Particularly high volume was seen for the $48 strike put option expiring November 20, 2015, with 1,923 contracts trading so far today, representing approximately 192,300 underlying shares of GME. Below is a chart showing GME's trailing twelve month trading history, with the $48 strike highlighted in orange:
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