From Barchart:

AT&T’s March 15 $19 call saw a huge surge in volume on Thursday, reaching 511,324, which is 2.7 times its 30-day average. The $19 strike accounted for 63% of the volume, with a Vol/OI ratio of 210.44, the highest of any option expiring next Friday or later. This marks an epic day for the wireless carrier’s options.



Read more: AT&T’s Unusually Active Options a Much Better Bet Than the Stock Itself