Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Microvision Inc. (MVIS - Get Report), where a total volume of 1,908 contracts has been traded thus far today, a contract volume which is representative of approximately 190,800 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 51.4% of MVIS's average daily trading volume over the past month, of 371,365 shares. Particularly high volume was seen for the $4 strike call option expiring February 16, 2018, with 587 contracts trading so far today, representing approximately 58,700 underlying shares of MVIS. Below is a chart showing MVIS's trailing twelve month trading history, with the $4 strike highlighted in orange:

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Ciena Corp ( CIEN) saw options trading volume of 13,557 contracts, representing approximately 1.4 million underlying shares or approximately 50.6% of CIEN's average daily trading volume over the past month, of 2.7 million shares. Particularly high volume was seen for the $21 strike call option expiring January 19, 2018, with 5,122 contracts trading so far today, representing approximately 512,200 underlying shares of CIEN. Below is a chart showing CIEN's trailing twelve month trading history, with the $21 strike highlighted in orange:

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And Realogy Holdings Corp ( RLGY) options are showing a volume of 6,618 contracts thus far today. That number of contracts represents approximately 661,800 underlying shares, working out to a sizeable 49.4% of RLGY's average daily trading volume over the past month, of 1.3 million shares. Particularly high volume was seen for the $32.50 strike put option expiring November 17, 2017, with 4,041 contracts trading so far today, representing approximately 404,100 underlying shares of RLGY. Below is a chart showing RLGY's trailing twelve month trading history, with the $32.50 strike highlighted in orange:

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