Markets

Notable Friday Option Activity: PRTA, GM, ADSK

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Among the underlying components of the Russell 3000 index, we saw noteworthy options trading volume today in Prothena Corp plc (Symbol: PRTA), where a total of 2,467 contracts have traded so far, representing approximately 246,700 underlying shares. That amounts to about 45.9% of PRTA's average daily trading volume over the past month of 537,100 shares. Particularly high volume was seen for the $22.50 strike put option expiring May 18, 2018 , with 774 contracts trading so far today, representing approximately 77,400 underlying shares of PRTA. Below is a chart showing PRTA's trailing twelve month trading history, with the $22.50 strike highlighted in orange:

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General Motors Co (Symbol: GM) options are showing a volume of 54,256 contracts thus far today. That number of contracts represents approximately 5.4 million underlying shares, working out to a sizeable 45.7% of GM's average daily trading volume over the past month, of 11.9 million shares. Especially high volume was seen for the $38 strike put option expiring April 20, 2018 , with 12,546 contracts trading so far today, representing approximately 1.3 million underlying shares of GM. Below is a chart showing GM's trailing twelve month trading history, with the $38 strike highlighted in orange:

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And Autodesk Inc. (Symbol: ADSK) saw options trading volume of 10,513 contracts, representing approximately 1.1 million underlying shares or approximately 45.5% of ADSK's average daily trading volume over the past month, of 2.3 million shares. Especially high volume was seen for the $130 strike put option expiring April 20, 2018 , with 3,000 contracts trading so far today, representing approximately 300,000 underlying shares of ADSK. Below is a chart showing ADSK's trailing twelve month trading history, with the $130 strike highlighted in orange:

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For the various different available expirations for PRTA options , GM options , or ADSK options , visit StockOptionsChannel.com.

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

The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of Nasdaq, Inc.


The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of Nasdaq, Inc.

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