US stock markets today: Wall Street rallies, oil tumbles after US and Iran reaches deal; AI and travel stocks jump

The tentative US-Iran agreement signals a significant de-escalation in geopolitical risk, triggering broad equity strength and commodity repricing. NVDA and AMD benefited from risk-on sentiment and anticipated lower energy costs for data center operations, while travel equities like AAL gained on improved demand expectations and cheaper jet fuel headwinds relief.

Oil's sharp selloff reflects both the direct supply-side relief from normalized Iran relations and the indirect demand-suppression signal embedded in a stronger equity market rotation. Energy equities face structural headwinds from prolonged price weakness, though exploration and refining margins may compress further if crude sustains lower levels.

The simultaneous outperformance of Technology and Consumer Cyclical sectors indicates investors are repricing both growth (lower geopolitical discount on future cash flows) and cyclical exposure (lower energy input costs). This correlation pattern suggests institutional reallocation rather than broad market lift.

Sector implication: The divergence between Technology strength and Energy weakness reflects a structural shift in portfolio positioning—away from defensive hedges (energy/commodities) toward higher-beta growth. Watch for continuation if Iran deal achieves ratification; reversal risk exists if negotiations stall or geopolitical tensions re-escalate.