Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Immersion Corp (IMMR - Get Report), where a total volume of 6,422 contracts has been traded thus far today, a contract volume which is representative of approximately 642,200 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 237.8% of IMMR's average daily trading volume over the past month, of 270,055 shares. Especially high volume was seen for the $7.50 strike put option expiring August 18, 2017, with 3,003 contracts trading so far today, representing approximately 300,300 underlying shares of IMMR. Below is a chart showing IMMR's trailing twelve month trading history, with the $7.50 strike highlighted in orange:

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MiMedx Group Inc ( MDXG) saw options trading volume of 4,526 contracts, representing approximately 452,600 underlying shares or approximately 54.9% of MDXG's average daily trading volume over the past month, of 824,550 shares. Particularly high volume was seen for the $7.50 strike put option expiring September 15, 2017, with 4,500 contracts trading so far today, representing approximately 450,000 underlying shares of MDXG. Below is a chart showing MDXG's trailing twelve month trading history, with the $7.50 strike highlighted in orange:

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And Aerojet Rocketdyne Holdings Inc ( AJRD) options are showing a volume of 1,809 contracts thus far today. That number of contracts represents approximately 180,900 underlying shares, working out to a sizeable 48.3% of AJRD's average daily trading volume over the past month, of 374,170 shares. Particularly high volume was seen for the $20 strike put option expiring August 18, 2017, with 1,014 contracts trading so far today, representing approximately 101,400 underlying shares of AJRD. Below is a chart showing AJRD's trailing twelve month trading history, with the $20 strike highlighted in orange:

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For the various different available expirations for IMMR options, MDXG options, or AJRD options, visit StockOptionsChannel.com.