Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Tesla Inc (TSLA), where a total volume of 1.4 million contracts has been traded thus far today, a contract volume which is representative of approximately 144.1 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 723% of TSLA's average daily trading volume over the past month, of 19.9 million shares. Particularly high volume was seen for the $910 strike call option expiring October 22, 2021, with 110,436 contracts trading so far today, representing approximately 11.0 million underlying shares of TSLA. Below is a chart showing TSLA's trailing twelve month trading history, with the $910 strike highlighted in orange:

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

Facebook Inc (FB) options are showing a volume of 633,650 contracts thus far today. That number of contracts represents approximately 63.4 million underlying shares, working out to a sizeable 303.4% of FB's average daily trading volume over the past month, of 20.9 million shares. Particularly high volume was seen for the $330 strike call option expiring October 22, 2021, with 45,543 contracts trading so far today, representing approximately 4.6 million underlying shares of FB. Below is a chart showing FB's trailing twelve month trading history, with the $330 strike highlighted in orange:

And Intel Corp (INTC) saw options trading volume of 598,257 contracts, representing approximately 59.8 million underlying shares or approximately 279.7% of INTC's average daily trading volume over the past month, of 21.4 million shares. Particularly high volume was seen for the $51 strike put option expiring October 22, 2021, with 27,516 contracts trading so far today, representing approximately 2.8 million underlying shares of INTC. Below is a chart showing INTC's trailing twelve month trading history, with the $51 strike highlighted in orange: