Why AT&T Stock Was Sliding Today

Shares of AT&T (T -3.23%) were falling today after strong phone subscriber additions were overshadowed by weak guidance for the new year.After gaining yesterday in sympathy with a better-than-expected earnings report from Verizon, AT&T stock was down 2.9% as of 11:31 a.m. ET.AT&T's fourth quarter was solidDespite the pullback, AT&T delivered a solid quarter, topping estimates on the top line but missing slightly on the bottom line.Wireless service revenue, the growth component of the business, was up 3%, wh ...