Stocks were moderately lower in midday trading on Monday as the market drifted between small gains and losses. A drop in oil prices pulled energy companies lower. Mining and materials stocks also fell as the prices of copper and other metals declined. Major stock markets around the world turned lower as investors looked ahead to the Federal Reserve’s meeting in Jackson Hole, Wyo., for clues on timing for a possible interest rate increase.
KEEPING SCORE The Dow Jones industrial average fell 0.11 percent, and the Standard & Poor’s 500-stock index lost 0.13 percent. The Nasdaq composite slipped 0.03 percent.