Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Boeing Co. (BA), where a total volume of 451,725 contracts has been traded thus far today, a contract volume which is representative of approximately 45.2 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 269.4% of BA's average daily trading volume over the past month, of 16.8 million shares. Especially high volume was seen for the $255 strike call option expiring March 12, 2021, with 53,026 contracts trading so far today, representing approximately 5.3 million underlying shares of BA. Below is a chart showing BA's trailing twelve month trading history, with the $255 strike highlighted in orange:

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

Wynn Resorts Ltd (WYNN) options are showing a volume of 23,282 contracts thus far today. That number of contracts represents approximately 2.3 million underlying shares, working out to a sizeable 77.8% of WYNN's average daily trading volume over the past month, of 3.0 million shares. Particularly high volume was seen for the $145 strike call option expiring March 19, 2021, with 2,611 contracts trading so far today, representing approximately 261,100 underlying shares of WYNN. Below is a chart showing WYNN's trailing twelve month trading history, with the $145 strike highlighted in orange:

And HCA Healthcare Inc (HCA) saw options trading volume of 10,066 contracts, representing approximately 1.0 million underlying shares or approximately 62.4% of HCA's average daily trading volume over the past month, of 1.6 million shares. Especially high volume was seen for the $185 strike call option expiring March 19, 2021, with 3,902 contracts trading so far today, representing approximately 390,200 underlying shares of HCA. Below is a chart showing HCA's trailing twelve month trading history, with the $185 strike highlighted in orange: