Noteworthy Friday Option Activity: ECL, JWN, HRB

Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in Ecolab Inc (ECL), where a total volume of 101,518 contracts has been traded thus far today, a contract volume which is representative of approximately 10.2 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 332.8% of ECL's average daily trading volume over the past month, of 3.1 million shares..