Nikkei 225 Surges Past 69,000, Gains 5.41% as US–Iran Peace Deal Lifts Asian Markets

The Nikkei 225 (^N225) just broke into history. Japan’s benchmark Nikkei 225 stock average briefly soared over 3,600 points to hit a record intraday high above 69,000 in Monday morning trading on June 15, 2026, as investors cheered US President Donald Trump’s announcement that a deal had been reached to end the conflict between the United States and Iran. The benchmark index surpassed its previous intraday high of 68,786 set on June 3, extending gains beyond 3,000 points and entering the 69,000 range for the first time in history.

Trump confirmed on Truth Social: “The Deal with the Islamic Republic of Iran is now complete” and authorized the immediate reopening of the Strait of Hormuz without a toll system. For Japan, the world’s largest oil importer from the Middle East, this one headline changed everything.

Nikkei 225 Record: Breaking Down the June 15 Numbers

This is not just a bounce; it is a structural reset for Japanese equities. After rising as high as 69,682.23, the Nikkei 225 finished the morning session at 69,593.64, up 3,573.60 points or 5.41% from Friday’s close of 66,020.40, the index’s largest single-session point gain in 2026.

Key June 15 market data across Asia:

• Nikkei 225 intraday high: 69,682.23, a record
• Nikkei 225 morning close: 69,593.64, up 5.41%
• Topix: Rose 3.32% alongside the Nikkei 225
• South Korea Kospi: Surged 5.56%, the day’s strongest regional performer
• Taiwan Taiex: Climbed 2.7%, hitting an all-time high
• Australia S&P/ASX 200: Gained 1.49%

Trump also authorized the reopening of the Strait of Hormuz, with Pakistan’s Prime Minister Shehbaz Sharif confirming that an official peace agreement signing ceremony will take place in Switzerland on Friday, June 20, 2026.

Oil Collapse: The Engine Behind the Nikkei 225 Rally

Japan’s energy dependency makes every oil move a market event, and June 15’s oil collapse was extraordinary. US crude oil futures for July delivery fell 4.85% to $80.76 per barrel, while Brent futures for August traded 4.35% lower at $83.51, the sharpest single-day oil decline since the start of the Iran conflict in February 2026.

Japan relies on the Middle East for around 95% of its oil supplies, with about 70% of that transiting the Strait of Hormuz, making the country disproportionately sensitive to Hormuz closures and oil price spikes. From March 9, 2026, when the Nikkei 225 tumbled 5.2% as oil surged past $100, to June 15’s record high, the index has recovered more than 16,000 points, entirely tracking the Iran conflict arc.

Japanese Stocks Leading the Surge

Technology, AI, and export-sensitive names drove the sharpest moves inside the Nikkei 225 on June 15.

The biggest winners:

• SoftBank Group (TYO: 9984): One of the most actively traded names on the day; rallied sharply as oil pressure on Japan’s economy eased
• Advantest (TYO: 6857): AI chip testing leader; previously fell 11% in March during peak conflict fears, sharply rebounding on June 15
• Tokyo Electron (TYO: 2760): Semiconductor equipment giant; consistent top-mover on every geopolitical catalyst since February
• Fujikura (TYO: 4620): AI infrastructure cable supplier; up significantly after double-digit declines during the conflict peak

Investor sentiment improved broadly after the US and Iran agreed on a memorandum aimed at ending hostilities, easing concerns about deteriorating corporate earnings and prompting broad-based buying almost across the entire Tokyo market.

Conclusion

The Nikkei 225’s surge to 69,682.23 on June 15, 2026, is the clearest single-day reflection of how deeply the Iran conflict damaged and now, how dramatically the peace deal has restored Japanese equity values. With WTI crude now closing at $84.88 on June 12 and falling further toward $80 on June 15, Fitch expects Brent crude to average $87 per barrel for full-year 2026 once the Strait reopens fully. For the Nikkei 225, the record is set. The next question is whether the peace deal holds well enough to push it beyond 70,000.

Disclaimer

The content shared by Meyka AI PTY LTD is solely for research and informational purposes. Meyka is not a financial advisory service, and the information provided should not be considered investment or trading advice.