AT&T (T 1.63%) stock moved higher in Monday's trading. The telecommunications company's share price gained 1.6% in the daily session amid a 0.1% gain for the S&P 500 index and a 0.3% gain for the Nasdaq Composite index.In addition to some positive momentum for the broader market, AT&T stock actually got a lift from its biggest competitor's latest earnings report. Verizon published its second-quarter results before the market opened today, and investors saw its numbers as a bullish indicator for the broader ...