Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Apollo Education Group, Inc. (APOL, where a total of 2,210 contracts have traded so far, representing approximately 221,000 underlying shares. That amounts to about 63.2% of APOL's average daily trading volume over the past month of 349,765 shares. Especially high volume was seen for the $9 strike call option expiring January 20, 2017, with 687 contracts trading so far today, representing approximately 68,700 underlying shares of APOL. Below is a chart showing APOL's trailing twelve month trading history, with the $9 strike highlighted in orange:

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CytRx Corp ( CYTR options are showing a volume of 5,092 contracts thus far today. That number of contracts represents approximately 509,200 underlying shares, working out to a sizeable 59.7% of CYTR's average daily trading volume over the past month, of 852,525 shares. Particularly high volume was seen for the $1 strike call option expiring March 17, 2017, with 3,578 contracts trading so far today, representing approximately 357,800 underlying shares of CYTR. Below is a chart showing CYTR's trailing twelve month trading history, with the $1 strike highlighted in orange:

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And Ambarella, Inc. ( AMBA saw options trading volume of 5,936 contracts, representing approximately 593,600 underlying shares or approximately 56.9% of AMBA's average daily trading volume over the past month, of 1.0 million shares. Particularly high volume was seen for the $62.50 strike put option expiring November 18, 2016, with 1,026 contracts trading so far today, representing approximately 102,600 underlying shares of AMBA. Below is a chart showing AMBA's trailing twelve month trading history, with the $62.50 strike highlighted in orange:

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