Noteworthy Monday Option Activity: DVAX, GLPI, HRTX

Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Dynavax Technologies Corp ( DVAX), where a total volume of 15,765 contracts has been traded thus far today, a contract volume which is representative of approximately 1.6 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 168.2% of DVAX's average daily trading volume over the past month, of 937,270 shares. Especially high volume was seen for the $12 strike put option expiring December 16, 2016, with 4,752 contracts trading so far today, representing approximately 475,200 underlying shares of DVAX. Below is a chart showing DVAX's trailing twelve month trading history, with the $12 strike highlighted in orange:

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Today's Most Active Call & Put Options of the S&P 500 »

Gaming & Leisure Properties, Inc ( GLPI) saw options trading volume of 14,205 contracts, representing approximately 1.4 million underlying shares or approximately 167.2% of GLPI's average daily trading volume over the past month, of 849,655 shares. Especially high volume was seen for the $29 strike put option expiring November 18, 2016, with 14,194 contracts trading so far today, representing approximately 1.4 million underlying shares of GLPI. Below is a chart showing GLPI's trailing twelve month trading history, with the $29 strike highlighted in orange:

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And Heron Therapeutics Inc ( HRTX) options are showing a volume of 8,019 contracts thus far today. That number of contracts represents approximately 801,900 underlying shares, working out to a sizeable 145.4% of HRTX's average daily trading volume over the past month, of 551,520 shares. Especially high volume was seen for the $22.50 strike call option expiring January 20, 2017, with 6,700 contracts trading so far today, representing approximately 670,000 underlying shares of HRTX. Below is a chart showing HRTX's trailing twelve month trading history, with the $22.50 strike highlighted in orange:

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