Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Sparton Corp. (SPA), where a total of 1,111 contracts have traded so far, representing approximately 111,100 underlying shares. That amounts to about 115% of SPA's average daily trading volume over the past month of 96,570 shares. Particularly high volume was seen for the $15 strike call option expiring December 16, 2016, with 590 contracts trading so far today, representing approximately 59,000 underlying shares of SPA. Below is a chart showing SPA's trailing twelve month trading history, with the $15 strike highlighted in orange:

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Adtran, Inc. ( ADTN) options are showing a volume of 2,305 contracts thus far today. That number of contracts represents approximately 230,500 underlying shares, working out to a sizeable 101.8% of ADTN's average daily trading volume over the past month, of 226,405 shares. Particularly high volume was seen for the $18 strike call option expiring November 18, 2016, with 2,221 contracts trading so far today, representing approximately 222,100 underlying shares of ADTN. Below is a chart showing ADTN's trailing twelve month trading history, with the $18 strike highlighted in orange:

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And Pandora Media Inc ( P) options are showing a volume of 33,303 contracts thus far today. That number of contracts represents approximately 3.3 million underlying shares, working out to a sizeable 66.1% of P's average daily trading volume over the past month, of 5.0 million shares. Particularly high volume was seen for the $14 strike call option expiring January 20, 2017, with 30,808 contracts trading so far today, representing approximately 3.1 million underlying shares of P. Below is a chart showing P's trailing twelve month trading history, with the $14 strike highlighted in orange:

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For the various different available expirations for SPA options, ADTN options, or P options, visit StockOptionsChannel.com.