Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Greif Inc (GEF), where a total volume of 1,341 contracts has been traded thus far today, a contract volume which is representative of approximately 134,100 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 91.2% of GEF's average daily trading volume over the past month, of 147,045 shares. Particularly high volume was seen for the $75 strike call option expiring January 19, 2024, with 598 contracts trading so far today, representing approximately 59,800 underlying shares of GEF. Below is a chart showing GEF's trailing twelve month trading history, with the $75 strike highlighted in orange:

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

Myriad Genetics, Inc. (MYGN) options are showing a volume of 4,721 contracts thus far today. That number of contracts represents approximately 472,100 underlying shares, working out to a sizeable 86.6% of MYGN's average daily trading volume over the past month, of 544,905 shares. Particularly high volume was seen for the $26 strike call option expiring July 21, 2023, with 2,601 contracts trading so far today, representing approximately 260,100 underlying shares of MYGN. Below is a chart showing MYGN's trailing twelve month trading history, with the $26 strike highlighted in orange:

And Aclaris Therapeutics Inc (ACRS) saw options trading volume of 4,727 contracts, representing approximately 472,700 underlying shares or approximately 84.4% of ACRS's average daily trading volume over the past month, of 559,865 shares. Particularly high volume was seen for the $9 strike put option expiring December 15, 2023, with 2,000 contracts trading so far today, representing approximately 200,000 underlying shares of ACRS. Below is a chart showing ACRS's trailing twelve month trading history, with the $9 strike highlighted in orange: