Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in AutoZone, Inc. (Symbol: AZO), where a total volume of 2,024 contracts has been traded thus far today, a contract volume which is representative of approximately 202,400 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 51.3% of AZO's average daily trading volume over the past month, of 394,920 shares. Especially high volume was seen for the $785 strike call option expiring February 16, 2018 , with 181 contracts trading so far today, representing approximately 18,100 underlying shares of AZO. Below is a chart showing AZO's trailing twelve month trading history, with the $785 strike highlighted in orange:

Procter & Gamble Company (Symbol: PG) options are showing a volume of 36,849 contracts thus far today. That number of contracts represents approximately 3.7 million underlying shares, working out to a sizeable 49.2% of PG's average daily trading volume over the past month, of 7.5 million shares. Particularly high volume was seen for the $87.50 strike put option expiring March 16, 2018 , with 10,088 contracts trading so far today, representing approximately 1.0 million underlying shares of PG. Below is a chart showing PG's trailing twelve month trading history, with the $87.50 strike highlighted in orange:

And Xilinx, Inc. (Symbol: XLNX) options are showing a volume of 10,691 contracts thus far today. That number of contracts represents approximately 1.1 million underlying shares, working out to a sizeable 47.2% of XLNX's average daily trading volume over the past month, of 2.3 million shares. Particularly high volume was seen for the $72.50 strike call option expiring March 16, 2018 , with 1,094 contracts trading so far today, representing approximately 109,400 underlying shares of XLNX. Below is a chart showing XLNX's trailing twelve month trading history, with the $72.50 strike highlighted in orange:

For the various different available expirations for AZO options , PG options , or XLNX 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.