Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in Applied Optoelectronics Inc (AAOI - Get Report), where a total volume of 21,321 contracts has been traded thus far today, a contract volume which is representative of approximately 2.1 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 65.2% of AAOI's average daily trading volume over the past month, of 3.3 million shares. Particularly high volume was seen for the $60 strike call option expiring May 19, 2017, with 8,880 contracts trading so far today, representing approximately 888,000 underlying shares of AAOI. Below is a chart showing AAOI's trailing twelve month trading history, with the $60 strike highlighted in orange:

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SemGroup Corp ( SEMG) options are showing a volume of 2,901 contracts thus far today. That number of contracts represents approximately 290,100 underlying shares, working out to a sizeable 63% of SEMG's average daily trading volume over the past month, of 460,125 shares. Particularly high volume was seen for the $35 strike call option expiring May 19, 2017, with 2,893 contracts trading so far today, representing approximately 289,300 underlying shares of SEMG. Below is a chart showing SEMG's trailing twelve month trading history, with the $35 strike highlighted in orange:

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And Cognex Corp. ( CGNX) options are showing a volume of 4,376 contracts thus far today. That number of contracts represents approximately 437,600 underlying shares, working out to a sizeable 61.6% of CGNX's average daily trading volume over the past month, of 710,530 shares. Particularly high volume was seen for the $90 strike call option expiring June 16, 2017, with 1,291 contracts trading so far today, representing approximately 129,100 underlying shares of CGNX. Below is a chart showing CGNX's trailing twelve month trading history, with the $90 strike highlighted in orange:

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For the various different available expirations for AAOI options, SEMG options, or CGNX options, visit StockOptionsChannel.com.