The S&P 500 opened flat with mixed performance across tech giants. What caught traders' attention was the volume picture—Monday's activity came in significantly lighter than usual, running nearly 40% below the 20-day moving average. That kind of thin trading typically signals cautious positioning ahead. With Tuesday expected to see similar low-volume conditions, we're looking at one of those stretched-out trading days where moves feel more pronounced than the underlying conviction behind them. Tech mega-caps remain split on direction, reflecting broader uncertainty in how investors are reading current conditions.