Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Gray Television Inc (GTN - Get Report), where a total volume of 6,380 contracts has been traded thus far today, a contract volume which is representative of approximately 638,000 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 66.1% of GTN's average daily trading volume over the past month, of 964,990 shares. Particularly high volume was seen for the $17.50 strike call option expiring February 16, 2018, with 3,036 contracts trading so far today, representing approximately 303,600 underlying shares of GTN. Below is a chart showing GTN's trailing twelve month trading history, with the $17.50 strike highlighted in orange:

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MBIA Inc. ( MBI) options are showing a volume of 41,997 contracts thus far today. That number of contracts represents approximately 4.2 million underlying shares, working out to a sizeable 64.7% of MBI's average daily trading volume over the past month, of 6.5 million shares. Especially high volume was seen for the $7 strike call option expiring January 18, 2019, with 25,035 contracts trading so far today, representing approximately 2.5 million underlying shares of MBI. Below is a chart showing MBI's trailing twelve month trading history, with the $7 strike highlighted in orange:

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And Universal Health Services, Inc. ( UHS) saw options trading volume of 5,307 contracts, representing approximately 530,700 underlying shares or approximately 63.5% of UHS's average daily trading volume over the past month, of 835,340 shares. Particularly high volume was seen for the $105 strike put option expiring November 17, 2017, with 3,618 contracts trading so far today, representing approximately 361,800 underlying shares of UHS. Below is a chart showing UHS's trailing twelve month trading history, with the $105 strike highlighted in orange:

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For the various different available expirations for GTN options, MBI options, or UHS options, visit StockOptionsChannel.com.