Asia-Pacific Markets Open Lower Amid Uncertainty Over Iran-U.S. Negotiations; Oil Prices Rise

Neutral (-0.2)Impact: Medium

Published on May 28, 2026 (2 hours ago) · By Vibe Trader

Asia-Pacific markets opened lower on Thursday as investors weighed mixed signals from ongoing Iran-U.S. negotiations, which are taking place against the backdrop of a fragile ceasefire [1]. Secretary of State Marco Rubio stated that talks with Iran have made some progress and emphasized the U.S. preference for a diplomatic solution, saying, "we're going to give it every chance to succeed" [1]. However, President Donald Trump asserted that he would not allow Iran to control the key Strait of Hormuz as part of any agreement [1].

A Reuters report, citing Iranian state media, claimed that Tehran had committed to restoring commercial traffic through the Strait of Hormuz to prewar levels within one month of reaching an agreement with the U.S. [1]. The White House, however, responded via social media, calling the report about a memorandum of understanding "a complete fabrication" [1].

In commodity markets, West Texas Intermediate (WTI) futures for July rose 1.86% to $90.33 per barrel as of 8:04 p.m. ET, while Brent crude futures for July increased 1.87% to $96.05 per barrel [1]. In equity markets, South Korea's Kospi fell 0.29%, the small-cap Kosdaq slid 0.25%, Japan's Nikkei 225 dropped 0.76%, the Topix declined 0.71%, and Australia's S&P/ASX 200 was down 0.75% [1].

U.S. futures showed modest gains, with S&P 500 and Nasdaq 100 futures both rising less than 0.1%, and Dow Jones Industrial Average futures adding 49 points, or 0.1% [1]. During Wednesday's regular session, the S&P 500 edged up 0.02% to close at a record 7,520.36, the Dow gained 182.60 points (0.36%) for a record close of 50,644.28, and the Nasdaq Composite rose 0.07% to end at 26,674.73 [1].

CONCLUSION

Asia-Pacific markets declined as investors reacted to conflicting reports and official statements regarding Iran-U.S. negotiations, while oil prices climbed on the uncertainty. U.S. markets remained resilient, with major indices closing at record highs in the previous session.

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