Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Sonic Corp. (SONC), where a total volume of 6,244 contracts has been traded thus far today, a contract volume which is representative of approximately 624,400 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 80.3% of SONC's average daily trading volume over the past month, of 778,035 shares. Especially high volume was seen for the $25 strike put option expiring January 20, 2017, with 2,636 contracts trading so far today, representing approximately 263,600 underlying shares of SONC. Below is a chart showing SONC's trailing twelve month trading history, with the $25 strike highlighted in orange:

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Boyd Gaming Corp. ( BYD) options are showing a volume of 9,065 contracts thus far today. That number of contracts represents approximately 906,500 underlying shares, working out to a sizeable 71.4% of BYD's average daily trading volume over the past month, of 1.3 million shares. Particularly high volume was seen for the $17 strike put option expiring January 19, 2018, with 8,849 contracts trading so far today, representing approximately 884,900 underlying shares of BYD. Below is a chart showing BYD's trailing twelve month trading history, with the $17 strike highlighted in orange:

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And Box Inc ( BOX) saw options trading volume of 5,961 contracts, representing approximately 596,100 underlying shares or approximately 68.4% of BOX's average daily trading volume over the past month, of 871,810 shares. Particularly high volume was seen for the $14 strike call option expiring January 20, 2017, with 5,751 contracts trading so far today, representing approximately 575,100 underlying shares of BOX. Below is a chart showing BOX's trailing twelve month trading history, with the $14 strike highlighted in orange:

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