Wall Street edged closer to record territory on Monday as investor sentiment improved following reports that Iran and the United States were engaged in active diplomatic talks.
President Donald Trump claimed that negotiations with Iran were under way, a development that traders interpreted as a potential reduction in geopolitical risk across the Middle East.
Oil prices fell sharply in response to the news, as the prospect of eased tensions with Tehran raised expectations that Iranian crude exports could eventually return to global markets.
Brent crude and US West Texas Intermediate both declined as traders unwound risk premiums that had built up amid months of elevated tension between Washington and Tehran.
Equity markets responded positively to the diplomatic signals, with major US indices climbing toward the all-time highs set earlier this year.
The S&P 500 and the Nasdaq both posted gains as investors rotated back into growth and technology stocks, sectors sensitive to shifts in macroeconomic confidence.
Lower oil prices also provided a boost to consumer sentiment expectations, as cheaper energy costs tend to ease inflationary pressure on households and businesses alike.
The reports of Iran talks came alongside ongoing uncertainty about US trade policy, with tariff negotiations still in flux across several major trading relationships globally.
Despite that backdrop, markets appeared willing to look past trade concerns for the moment, focusing instead on the potential geopolitical easing that diplomacy with Iran could bring.
Analysts cautioned that the situation remained fluid, noting that previous rounds of US-Iran diplomatic signalling had not always translated into concrete or lasting agreements.
The combination of record-seeking equity markets and falling oil prices reflected a broader mood of cautious optimism among institutional investors heading into the week’s trading sessions.
Currency markets also reflected the shift in sentiment, with the US dollar holding relatively steady as investors weighed the implications of potential progress on the Iran diplomatic front.