In the current session, the stock is trading at $29.43, after a 1.82% spike. Over the past month, AT&T Inc. T stock increased by 3.32%, and in the past year, by 37.18%. With performance like this, long-term shareholders are optimistic but others are more likely to look into the price-to-earnings ratio to see if the stock might be overvalued.How Does AT&T P/E Compare to Other Companies?The P/E ratio is used by long-term shareholders to assess the company's market performance against aggregate market data, hi ...