Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Geo Group Inc (GEO - Get Report), where a total of 14,002 contracts have traded so far, representing approximately 1.4 million underlying shares. That amounts to about 290.3% of GEO's average daily trading volume over the past month of 482,325 shares. Particularly high volume was seen for the $22.50 strike call option expiring September 16, 2016, with 3,487 contracts trading so far today, representing approximately 348,700 underlying shares of GEO. Below is a chart showing GEO's trailing twelve month trading history, with the $22.50 strike highlighted in orange:

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Reading International Inc ( RDI) options are showing a volume of 512 contracts thus far today. That number of contracts represents approximately 51,200 underlying shares, working out to a sizeable 126.9% of RDI's average daily trading volume over the past month, of 40,335 shares. Particularly high volume was seen for the $10 strike call option expiring October 21, 2016, with 262 contracts trading so far today, representing approximately 26,200 underlying shares of RDI. Below is a chart showing RDI's trailing twelve month trading history, with the $10 strike highlighted in orange:

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And Portola Pharmaceuticals, Inc. ( PTLA) saw options trading volume of 12,273 contracts, representing approximately 1.2 million underlying shares or approximately 117.2% of PTLA's average daily trading volume over the past month, of 1.0 million shares. Especially high volume was seen for the $20 strike put option expiring August 19, 2016, with 2,234 contracts trading so far today, representing approximately 223,400 underlying shares of PTLA. Below is a chart showing PTLA's trailing twelve month trading history, with the $20 strike highlighted in orange:

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For the various different available expirations for GEO options, RDI options, or PTLA options, visit StockOptionsChannel.com.