Looking at options trading activity among components of the S&P 500 index, there is noteworthy activity today in GE HealthCare Technologies Inc (GEHC), where a total volume of 18,236 contracts has been traded thus far today, a contract volume which is representative of approximately 1.8 million underlying shares (given that every 1 contract represents 100 underlying shares). That number works out to 87% of GEHC's average daily trading volume over the past month, of 2.1 million shares..