Notable Thursday Option Activity: TDG, EL, LDOS

Among the underlying components of the S&P 500 index, we saw noteworthy options trading volume today in TransDigm Group Inc (TDG), where a total of 1,123 contracts have traded so far, representing approximately 112,300 underlying shares. That amounts to about 51.8% of TDG's average daily trading volume over the past month of 216,595 shares..