Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Prudential Financial, Inc. (NYSE: PRU), where a total volume of 24,079 contracts has been traded thus far today, a contract volume which is representative of approximately 2.4 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 88.9% of PRU's average daily trading volume over the past month, of 2.7 million shares. Particularly high volume was seen for the $75 strike call option expiring July 15, 2016, with 10,259 contracts trading so far today, representing approximately 1.0 million underlying shares of PRU. Below is a chart showing PRU's trailing twelve month trading history, with the $75 strike highlighted in orange:
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