US stock index futures close higher Monday: S&P 500 +0.5%, Nasdaq 100 +1.22%

The dispersion is the story: Nasdaq 100 futures outpacing the S&P 500 by more than double, with Dow futures barely positive and small caps lagging well behind, points to a narrow, tech-led bid rather than broad risk appetite. That gap matters for anyone reading index-level strength as a market-wide signal, since it implies leadership is concentrated rather than diffused. Whether the megacap tech tilt persists or the laggards catch up is the open question worth watching in the sessions ahead.