S&P 500, Nasdaq Jump 1% on Iran Talks, Earnings

US equities posted broad gains Tuesday, with the S&P 500 and Nasdaq each climbing more than 1% as three converging tailwinds lifted risk appetite. Renewed signals of US-Iran diplomatic engagement reduced near-term geopolitical risk premium that had been weighing on sentiment, while softer-than-expected US producer price inflation reinforced expectations that cost pressures are easing. A solid corporate earnings season provided the third leg, giving equity buyers fundamental cover beyond macro relief. Technology led the advance, with software and semiconductor names driving index-level outperformance. The sector's outsized move reflects its dual sensitivity to interest rate expectations and global risk sentiment, both of which shifted favorably on the session. The rally pushed major indices toward record territory, a threshold that typically draws both momentum buyers and profit-taking. Investors should watch whether US-Iran talks produce concrete progress, as any breakdown would quickly reverse the geopolitical discount currently priced in. Inflation data and earnings guidance from bellwether tech names remain the near-term fundamental catalysts to track.