Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Cvent, Inc (CVT), where a total of 9,068 contracts have traded so far, representing approximately 906,800 underlying shares. That amounts to about 393.9% of CVT's average daily trading volume over the past month of 230,200 shares. Particularly high volume was seen for the $30 strike put option expiring January 20, 2017, with 5,323 contracts trading so far today, representing approximately 532,300 underlying shares of CVT. Below is a chart showing CVT's trailing twelve month trading history, with the $30 strike highlighted in orange:

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

FuelCell Energy Inc ( FCEL) options are showing a volume of 4,721 contracts thus far today. That number of contracts represents approximately 472,100 underlying shares, working out to a sizeable 114% of FCEL's average daily trading volume over the past month, of 414,005 shares. Especially high volume was seen for the $6 strike call option expiring November 18, 2016, with 4,025 contracts trading so far today, representing approximately 402,500 underlying shares of FCEL. Below is a chart showing FCEL's trailing twelve month trading history, with the $6 strike highlighted in orange:

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And Tenet Healthcare Corp. ( THC) saw options trading volume of 22,383 contracts, representing approximately 2.2 million underlying shares or approximately 86.9% of THC's average daily trading volume over the past month, of 2.6 million shares. Particularly high volume was seen for the $22 strike call option expiring November 18, 2016, with 7,430 contracts trading so far today, representing approximately 743,000 underlying shares of THC. Below is a chart showing THC's trailing twelve month trading history, with the $22 strike highlighted in orange:

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