Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in KemPharm Inc (KMPH), where a total volume of 2,085 contracts has been traded thus far today, a contract volume which is representative of approximately 208,500 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 48.1% of KMPH's average daily trading volume over the past month, of 433,910 shares. Particularly high volume was seen for the $5 strike call option expiring January 21, 2022, with 819 contracts trading so far today, representing approximately 81,900 underlying shares of KMPH. Below is a chart showing KMPH's trailing twelve month trading history, with the $5 strike highlighted in orange:

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

Cassava Sciences Inc (SAVA) options are showing a volume of 18,211 contracts thus far today. That number of contracts represents approximately 1.8 million underlying shares, working out to a sizeable 48% of SAVA's average daily trading volume over the past month, of 3.8 million shares. Particularly high volume was seen for the $50 strike call option expiring January 21, 2022, with 953 contracts trading so far today, representing approximately 95,300 underlying shares of SAVA. Below is a chart showing SAVA's trailing twelve month trading history, with the $50 strike highlighted in orange:

And NMI Holdings Inc (NMIH) options are showing a volume of 4,045 contracts thus far today. That number of contracts represents approximately 404,500 underlying shares, working out to a sizeable 47% of NMIH's average daily trading volume over the past month, of 861,140 shares. Particularly high volume was seen for the $25 strike call option expiring March 18, 2022, with 2,017 contracts trading so far today, representing approximately 201,700 underlying shares of NMIH. Below is a chart showing NMIH's trailing twelve month trading history, with the $25 strike highlighted in orange: