Asian Markets Rally on Reported Iran Ceasefire; KOSPI Reclaims 8,000 Amid Caution

In South Korea, the KOSPI’s rebound was so sharp it triggered a buy-side circuit breaker at the open, before reclaiming the 8,000-point level, marking a one-day shift from war fears to peace hopes.
Trump described the alleged framework as “almost finalized,” saying, “We have reached a great settlement regarding the Iran war,” adding that Iran would “never possess nuclear weapons,” and said a signing ceremony could take place in Europe “with Vice President J.D. Vance potentially in attendance”—after earlier threatening, “We will strike Iran VERY HARD tonight” and floated seizing Kharg Island.
MarketWatch reported a claimed attribution inside the Iranian leadership: Trump said Iran’s Supreme Leader “Mojtaba Khamenei had signed off,” while Tehran countered that it “hadn't decided,” underscoring the gap between U.S. claims and Iran’s position.
National Australia Bank’s FX strategist Ray Attrill said the situation may be “more tangible” than prior rounds, and warned sentiment could flip quickly if Iran sends a positive signal: “If we hear something from Iran that sounds positive, the odds (of a peace deal) are clearly going to flip quite dramatically.”
The Straits Times noted the macro stakes of the conflict: the European Central Bank “had to raise interest rates for the first time in nearly three years” to curb war-driven inflation—highlighting why easing Middle East tensions had immediate relevance for rates expectations globally.
Asian stocks surged on June 12 after U.S. President Donald Trump said airstrikes on Iran had been called off and a peace deal was "almost finalized." South Korea's KOSPI reclaimed the 8,000-point level — a milestone that looked impossible just days earlier — triggering a rare buy-side circuit breaker at the open as buy orders flooded in. EconoTimes reported that tech and chip shares led the rebound across the region.
Oil slid to two-month lows, erasing the war premium that had built up over weeks. The U.S. dollar weakened and Treasury yields fell as investors moved out of safe-haven assets and back into stocks. France24 noted that Iran's foreign ministry said it "hadn't decided" on any deal — leaving markets to trade on hope rather than confirmation.
Trump told reporters, "We have reached a great settlement regarding the Iran war." He said Iran would "never possess nuclear weapons" under the framework. He added that a signing ceremony could take place in Europe, with Vice President J.D. Vance potentially attending. Just 48 hours earlier, Trump had posted that the U.S. would strike Iran "VERY HARD tonight" and floated seizing Kharg Island — Iran's main oil export terminal.
The gap between Washington and Tehran remained wide. Trump claimed Iran's Supreme Leader Mojtaba Khamenei had "signed off" on the deal. But BSS News reported that Iranian officials pushed back, saying they "hadn't reached a final conclusion." That contradiction kept analysts on edge even as stock markets celebrated.
South Korea's KOSPI was the standout mover. The index gapped up so sharply at the open that a buy-side circuit breaker kicked in — a rare safety mechanism that halts trading when too many buy orders rush in at once. The index went on to reclaim 8,000 points, a level that had seemed out of reach during the height of war fears earlier in the month. Japan and Australia also posted strong gains. EconoTimes said chip and tech shares rebounded most sharply across the region.
A secondary catalyst added fuel to the rally. SpaceX's record-breaking IPO boosted Wall Street optimism and helped lift the Nasdaq overnight, giving Asian investors an extra reason to buy. Crypto Briefing noted that Bitcoin also followed the risk-on momentum higher as investors appetite for riskier assets grew.
The conflict had already done real economic damage before Thursday's pivot. France24 reported that the European Central Bank raised interest rates for the first time in nearly three years — a direct response to energy inflation driven by the war. Oil had spiked to year-to-date highs on fears of a Strait of Hormuz blockade. The ECB's move was a stark sign of how quickly Middle East tensions had spilled into everyday costs across Europe.
If the deal holds, analysts expect oil to settle into a lower trading range. That could put pressure on the ECB to pause or reverse its rate hike. Infonasional reported that falling oil prices were already easing inflation fears and pulling Treasury yields lower — a sign that bond markets were already pricing in a more peaceful outlook.
Not everyone is convinced the deal is real. Ray Attrill, FX strategist at National Australia Bank, said the situation may be "more tangible" than previous failed rounds of diplomacy. But he also warned: "If we hear something from Iran that sounds positive, the odds of a peace deal are clearly going to flip quite dramatically." That cuts both ways — a denial from Tehran could send markets sharply lower just as fast.
Analysts point to a long history of false starts in U.S.-Iran talks. The current MOU — a Memorandum of Understanding, essentially a preliminary agreement — has not been formally signed. Iran's state media has issued cautious language that appears aimed at managing domestic hardliners. BSS News reported that markets remain vulnerable to any official denial coming out of Tehran in the next 24 hours.
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