Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Netflix Inc (NFLX), where a total volume of 155,633 contracts has been traded thus far today, a contract volume which is representative of approximately 15.6 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 184.7% of NFLX's average daily trading volume over the past month, of 8.4 million shares. Especially high volume was seen for the $420 strike put option expiring August 11, 2023, with 10,840 contracts trading so far today, representing approximately 1.1 million underlying shares of NFLX. Below is a chart showing NFLX's trailing twelve month trading history, with the $420 strike highlighted in orange:

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

Asure Software Inc. (ASUR) options are showing a volume of 2,849 contracts thus far today. That number of contracts represents approximately 284,900 underlying shares, working out to a sizeable 171.5% of ASUR's average daily trading volume over the past month, of 166,120 shares. Especially high volume was seen for the $15 strike call option expiring March 15, 2024, with 1,402 contracts trading so far today, representing approximately 140,200 underlying shares of ASUR. Below is a chart showing ASUR's trailing twelve month trading history, with the $15 strike highlighted in orange:

And Costco Wholesale Corp (COST) options are showing a volume of 22,837 contracts thus far today. That number of contracts represents approximately 2.3 million underlying shares, working out to a sizeable 137.2% of COST's average daily trading volume over the past month, of 1.7 million shares. Particularly high volume was seen for the $565 strike call option expiring August 11, 2023, with 1,468 contracts trading so far today, representing approximately 146,800 underlying shares of COST. Below is a chart showing COST's trailing twelve month trading history, with the $565 strike highlighted in orange: