US stock futures rise; S&P 500 futures up 0.3%, Nasdaq 100 futures gain 0.6%

The tech-heavy Nasdaq 100 futures outpacing the S&P 500 points to a growth-led tilt in pre-market positioning rather than a broad risk-on bid. That distinction matters because it suggests sentiment is concentrated in a narrow segment of the market, which can amplify moves in either direction once the cash session opens. Whether the tech leadership holds through the session, or broadens into the wider index, is the open question worth watching.