Among the underlying components of the S&P 500 index, we saw noteworthy options trading volume today in General Electric Co (NYSE: GE), where a total of 153,323 contracts have traded so far, representing approximately 15.3 million underlying shares. That amounts to about 45.6% of GE’s average daily trading volume over the past month of 33.6 million shares. Particularly high volume was seen for the $33 strike call option expiring October 21, 2016, with 95,235 contracts trading so far today, representing approximately 9.5 million underlying shares of GE.