Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Teradyne, Inc. (TER - Get Report), where a total of 22,888 contracts have traded so far, representing approximately 2.3 million underlying shares. That amounts to about 84.5% of TER's average daily trading volume over the past month of 2.7 million shares. Particularly high volume was seen for the $20 strike call option expiring January 15, 2016, with 6,854 contracts trading so far today, representing approximately 685,400 underlying shares of TER. Below is a chart showing TER's trailing twelve month trading history, with the $20 strike highlighted in orange:

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Navigant Consulting, Inc. ( NCI saw options trading volume of 2,604 contracts, representing approximately 260,400 underlying shares or approximately 77.5% of NCI's average daily trading volume over the past month, of 335,900 shares. Especially high volume was seen for the $17 strike call option expiring November 20, 2015, with 2,113 contracts trading so far today, representing approximately 211,300 underlying shares of NCI. Below is a chart showing NCI's trailing twelve month trading history, with the $17 strike highlighted in orange:

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And Cerus Corp. ( CERS saw options trading volume of 5,852 contracts, representing approximately 585,200 underlying shares or approximately 72.8% of CERS's average daily trading volume over the past month, of 803,645 shares. Especially high volume was seen for the $4 strike put option expiring May 20, 2016, with 5,000 contracts trading so far today, representing approximately 500,000 underlying shares of CERS. Below is a chart showing CERS's trailing twelve month trading history, with the $4 strike highlighted in orange:

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