Stock market today: S&P 500, Nasdaq, Dow futures climb as a halt to US-Iranian attacks is called

De-escalation of US-Iran tensions triggered a broad risk-on rally across equity futures, with major indices advancing on renewed diplomatic engagement. The prospect of halted attacks reduces geopolitical premium embedded in asset prices, particularly benefiting cyclical and growth-sensitive equities that had priced in elevated tail risk. Technology and non-defensive sectors lead the rebound as investors rotate back into higher-beta positioning.

The diplomatic breakthrough signals a shift from acute geopolitical uncertainty toward negotiation pathways. This environment typically supports equity valuations by lowering the cost of capital and reducing volatility expectations. Energy sector exposure remains mixed—while crude may face headwinds from reduced conflict risk, financial conditions broadly ease, benefiting leveraged and equity-financed entities.

Nasdaq and growth stocks outperform in this scenario, as risk-off hedges unwind and institutional capital rotates from safe havens. Flight-to-quality positioning becomes less necessary, allowing funds to redeploy into previously compressed valuations in mega-cap tech and discretionary names.

Sector implication: This event signals transition from defensive-rotation to cyclical-recovery positioning. The resumption of normal geopolitical risk pricing may sustain momentum in Technology, Financial Services, and Materials through improved sentiment and reduced volatility drag on equity risk premiums.