US-Iran Peace Hopes Sink Oil Prices, Pull Treasury Yields Lower

Oil prices tumbled on Wednesday, May 27, 2026, on reports the U.S. and Iran are nearing an informal agreement to restore commercial shipping through the Strait of Hormuz, sparking a rally in U.S. government bonds as inflation fears eased. The 30-year Treasury yield briefly fell below 5% to 4.98%, its first intraday break below that threshold since May 12, while yields across maturities hit more than one-week lows. West Texas Intermediate crude slid under $88 per barrel and Brent dropped below $95, both hitting their lowest levels since April 22. The decline offers temporary relief from the soaring energy costs that have pressured global inflation and pushed the Federal Reserve toward a more hawkish stance since late February, when U.S. airstrikes disrupted Middle East supply. Bank of America strategist Meghan Swiber said oil in the $80–$100 range remains a “sensitive area” for the Fed, as sustained high prices could force further rate hikes. Investors now focus on the upcoming PCE price index, the Fed’s preferred inflation gauge, with April’s reading expected to climb to 3.8% year-over-year from 3.5% in March—well above the central bank’s 2% target. Strong demand at a Tuesday 2-year note auction, which drew a yield of 4.071%, signaled that elevated yields are luring buyers back into Treasurys ahead of a $70 billion 5-year note sale on Wednesday.