Looking at options trading activity among components of the Russell 3000 index, there is noteworthy activity today in MuleSoft Inc (MULE), where a total volume of 5,835 contracts has been traded thus far today, a contract volume which is representative of approximately 583,500 underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 42.7% of MULE's average daily trading volume over the past month, of 1.4 million shares. Especially high volume was seen for the $22.50 strike put option expiring November 17, 2017, with 3,102 contracts trading so far today, representing approximately 310,200 underlying shares of MULE. Below is a chart showing MULE's trailing twelve month trading history, with the $22.50 strike highlighted in orange:

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Chemed Corp ( CHE) options are showing a volume of 334 contracts thus far today. That number of contracts represents approximately 33,400 underlying shares, working out to a sizeable 42.1% of CHE's average daily trading volume over the past month, of 79,330 shares. Especially high volume was seen for the $145 strike put option expiring November 17, 2017, with 325 contracts trading so far today, representing approximately 32,500 underlying shares of CHE. Below is a chart showing CHE's trailing twelve month trading history, with the $145 strike highlighted in orange:

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And Sarepta Therapeutics Inc ( SRPT) saw options trading volume of 9,125 contracts, representing approximately 912,500 underlying shares or approximately 41.2% of SRPT's average daily trading volume over the past month, of 2.2 million shares. Particularly high volume was seen for the $50 strike call option expiring November 17, 2017, with 1,128 contracts trading so far today, representing approximately 112,800 underlying shares of SRPT. Below is a chart showing SRPT's trailing twelve month trading history, with the $50 strike highlighted in orange:

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For the various different available expirations for MULE options, CHE options, or SRPT options, visit StockOptionsChannel.com.