Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Maxwell Technologies Inc (MXWL), where a total volume of 1,069 contracts has been traded thus far today, a contract volume which is representative of approximately 106,900 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 82.8% of MXWL's average daily trading volume over the past month, of 129,145 shares. Particularly high volume was seen for the $6 strike put option expiring December 15, 2017, with 500 contracts trading so far today, representing approximately 50,000 underlying shares of MXWL. Below is a chart showing MXWL's trailing twelve month trading history, with the $6 strike highlighted in orange:

Loading+chart++2017+TickerTech.com

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

NCR Corp ( NCR) options are showing a volume of 6,358 contracts thus far today. That number of contracts represents approximately 635,800 underlying shares, working out to a sizeable 68.1% of NCR's average daily trading volume over the past month, of 934,135 shares. Particularly high volume was seen for the $47 strike call option expiring January 17, 2020, with 4,000 contracts trading so far today, representing approximately 400,000 underlying shares of NCR. Below is a chart showing NCR's trailing twelve month trading history, with the $47 strike highlighted in orange:

Loading+chart++2017+TickerTech.com

And La Jolla Pharmaceutical Co. ( LJPC) options are showing a volume of 2,433 contracts thus far today. That number of contracts represents approximately 243,300 underlying shares, working out to a sizeable 66.1% of LJPC's average daily trading volume over the past month, of 368,185 shares. Particularly high volume was seen for the $32 strike put option expiring December 15, 2017, with 2,036 contracts trading so far today, representing approximately 203,600 underlying shares of LJPC. Below is a chart showing LJPC's trailing twelve month trading history, with the $32 strike highlighted in orange:

Loading+chart++2017+TickerTech.com

For the various different available expirations for MXWL options, NCR options, or LJPC options, visit StockOptionsChannel.com.