Bullstory
May 27, 2026

U.S.-Iran ceasefire extension lifts the S&P 500and Nasdaq to record closing highs

With the U.S. and Iran agreeing to extend their ceasefire, the S&P 500and Nasdaq hit record closing highs that day. Software-related stocks were strong, while international oil prices fell.


U.S.-Iran ceasefire extension lifts the S&P 500and Nasdaq to record closing highs

The U.S. and Iran agreed to extend their ceasefire. On the same day, the S&P 500and Nasdaq hit record closing highs. The Nasdaq 100also ended the session at a new record.

Software-related stocks were strong. Major growth stocks led the advance. Some technology stocks posted sharp intraday gains.

International oil prices fell. West Texas Intermediate (WTI) futures ended lower. The energy sector underperformed.

Risk-asset-focused trading was seen across the market. The stock indexes’ record highs were confirmed at the close of trading. Market participants kept a close watch on news related to the Middle East.

U.S. Treasury yields and movements in individual sectors diverged. Supply and demand for safe-haven and risk assets showed differing patterns across sectors. A combination of factors, rather than a single event, shaped the market that day.

The session ended with major indexes at record levels. Investor attention is expected to turn to upcoming diplomatic events and corporate earnings. Further announcements and price movements need to be monitored.

Sources: Reuters,Yahoo Finance

Bullstory synthesized this report from the linked sources. AI may have assisted the writing process. Check the original reports for factual confirmation.