Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Dun & Bradstreet Corp (DNB), where a total volume of 5,495 contracts has been traded thus far today, a contract volume which is representative of approximately 549,500 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 203.7% of DNB's average daily trading volume over the past month, of 269,700 shares. Especially high volume was seen for the $130 strike call option expiring February 16, 2018, with 5,304 contracts trading so far today, representing approximately 530,400 underlying shares of DNB. Below is a chart showing DNB's trailing twelve month trading history, with the $130 strike highlighted in orange:

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Select Energy Services Inc ( WTTR) options are showing a volume of 7,424 contracts thus far today. That number of contracts represents approximately 742,400 underlying shares, working out to a sizeable 201.2% of WTTR's average daily trading volume over the past month, of 368,935 shares. Especially high volume was seen for the $15 strike call option expiring February 16, 2018, with 3,500 contracts trading so far today, representing approximately 350,000 underlying shares of WTTR. Below is a chart showing WTTR's trailing twelve month trading history, with the $15 strike highlighted in orange:

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And Cara Therapeutics Inc ( CARA) saw options trading volume of 15,285 contracts, representing approximately 1.5 million underlying shares or approximately 159% of CARA's average daily trading volume over the past month, of 961,390 shares. Particularly high volume was seen for the $22.50 strike call option expiring February 16, 2018, with 3,842 contracts trading so far today, representing approximately 384,200 underlying shares of CARA. Below is a chart showing CARA's trailing twelve month trading history, with the $22.50 strike highlighted in orange:

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For the various different available expirations for DNB options, WTTR options, or CARA options, visit StockOptionsChannel.com.