Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Allergan PLC (Symbol: AGN), where a total volume of 11,450 contracts has been traded thus far today, a contract volume which is representative of approximately 1.1 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 50.5% of AGN's average daily trading volume over the past month, of 2.3 million shares. Especially high volume was seen for the $150 strike call option expiring November 15, 2019, with 5,232 contracts trading so far today, representing approximately 523,200 underlying shares of AGN. Below is a chart showing AGN's trailing twelve month trading history, with the $150 strike highlighted in orange:

Tiffany & Co. (Symbol: TIF) options are showing a volume of 7,606 contracts thus far today. That number of contracts represents approximately 760,600 underlying shares, working out to a sizeable 47.3% of TIF's average daily trading volume over the past month, of 1.6 million shares. Especially high volume was seen for the $75 strike put option expiring November 15, 2019, with 3,217 contracts trading so far today, representing approximately 321,700 underlying shares of TIF. Below is a chart showing TIF's trailing twelve month trading history, with the $75 strike highlighted in orange:

And Altria Group Inc (Symbol: MO) options are showing a volume of 33,030 contracts thus far today. That number of contracts represents approximately 3.3 million underlying shares, working out to a sizeable 46.7% of MO's average daily trading volume over the past month, of 7.1 million shares. Particularly high volume was seen for the $45 strike put option expiring July 19, 2019, with 5,353 contracts trading so far today, representing approximately 535,300 underlying shares of MO. Below is a chart showing MO's trailing twelve month trading history, with the $45 strike highlighted in orange:

For the various different available expirations for AGN options, TIF options, or MO options, visit StockOptionsChannel.com.
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