Comcast CMCSA shares have plunged 15.8% over the past year, underperforming the Zacks Consumer Discretionary sector’s appreciation of 11.2% and the Zacks Cable Television industry’s decline of 5.1%. CMCSA shares’ underperformance can be attributed to its recently reported decline in broadband subscribers,

Comcast CMCSA shares have plunged 15.8% over ... long-term competition from fiber and fixed wireless operators like AT&T T and Verizon Communications VZ. AT&T and Verizon are capitalizing on ...