Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in SEACOR Holdings Inc (CKH - Get Report), where a total volume of 1,008 contracts has been traded thus far today, a contract volume which is representative of approximately 100,800 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 83% of CKH's average daily trading volume over the past month, of 121,495 shares. Particularly high volume was seen for the $50 strike put option expiring July 21, 2017, with 1,000 contracts trading so far today, representing approximately 100,000 underlying shares of CKH. Below is a chart showing CKH's trailing twelve month trading history, with the $50 strike highlighted in orange:

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Altisource Portfolio Solutions SA ( ASPS) options are showing a volume of 1,994 contracts thus far today. That number of contracts represents approximately 199,400 underlying shares, working out to a sizeable 76.3% of ASPS's average daily trading volume over the past month, of 261,480 shares. Particularly high volume was seen for the $22.50 strike put option expiring April 21, 2017, with 701 contracts trading so far today, representing approximately 70,100 underlying shares of ASPS. Below is a chart showing ASPS's trailing twelve month trading history, with the $22.50 strike highlighted in orange:

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And Seadrill Ltd ( SDRL) options are showing a volume of 89,428 contracts thus far today. That number of contracts represents approximately 8.9 million underlying shares, working out to a sizeable 71.8% of SDRL's average daily trading volume over the past month, of 12.5 million shares. Especially high volume was seen for the $3 strike put option expiring July 21, 2017, with 17,124 contracts trading so far today, representing approximately 1.7 million underlying shares of SDRL. Below is a chart showing SDRL's trailing twelve month trading history, with the $3 strike highlighted in orange:

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For the various different available expirations for CKH options, ASPS options, or SDRL options, visit StockOptionsChannel.com.