AT&T fell by 3.42% to trade at $28.80 by 11:53 (16:53 GMT) on Thursday on the NYSE exchange.
The volume of AT&T shares traded since the start of the session was 24.66M. AT&T has traded in a range of $28.76 to $29.86 on the day.
The stock has traded at $30.4000 at its highest and $28.7800 at its lowest during the past seven days.
