Global stocks rebound 0.4% as Iran tensions ease, yen strengthens

Global equity markets posted a modest rise on Monday, halting a three‑day slide that had been driven by heightened geopolitical risk after the outbreak of hostilities in Iran. The MSCI World Index closed up 0.4 percent, while the broader S&P Global 1200 added 0.3 percent, marking the first gain since the index fell 1.2 percent on Friday. The rally unfolded alongside a renewed uptick in the Japanese yen, which strengthened to 152.8 per U.S. dollar, its highest level in six weeks, after a series of comments from Tokyo officials signalled a willingness to intervene if the currency’s decline persisted.

The market bounce cannot be separated from the broader backdrop of the Iran conflict, which erupted last week after Tehran’s missile strikes on a U.S. naval vessel in the Strait of Hormuz. The ensuing escalation has pushed oil prices above $95 a barrel, reviving concerns about supply disruptions that had previously dampened risk‑on sentiment. Yet, as the initial shock faded, investors began to reassess the probability of a protracted regional war, noting that diplomatic channels between the United States, its European allies and Tehran remain open. The perception that the conflict may be contained, rather than spiralling into a wider Middle‑East conflagration, helped to restore a degree of confidence in equities, especially in sectors less exposed to oil price volatility such as technology and consumer discretionary.

Currency markets reflected a parallel shift in risk appetite. The yen’s advance came after Japan’s Ministry of Finance hinted that it was closely monitoring “unusual” moves in the foreign‑exchange market and would act to “ensure orderly market conditions” if necessary. The dollar, meanwhile, slipped on weaker U.S. Treasury yields and a modest decline in the Federal Reserve’s balance‑sheet runoff pace, factors that have collectively eased the greenback’s dominance in the short term. Analysts note that the yen’s safe‑haven appeal, traditionally heightened during periods of geopolitical tension, has been reinforced by the Iran flare‑up, while the dollar’s retreat signals a broader rebalancing after a period of aggressive monetary tightening in the United States.

From a policy standpoint, the United States has reiterated its commitment to “protect freedom of navigation” in the Persian Gulf, while simultaneously urging restraint to avoid a broader escalation. Tehran, for its part, has framed its actions as a response to perceived violations of its sovereignty, warning that any further U.S. interference would be met with “proportionate” retaliation. In Tokyo, the government’s cautious stance on currency intervention underscores a desire to shield the export‑driven economy from excessive volatility, even as it navigates the delicate balance of supporting global financial stability. Meanwhile, central banks across Europe and Asia have maintained a watchful posture, ready to adjust policy if the conflict’s spill‑over effects begin to erode growth prospects.

The movements in equities and currencies have tangible implications for the Asia‑Pacific region, and for Taiwan in particular. A stronger yen can compress the profit margins of Taiwanese manufacturers that export heavily to Japan, while a firmer dollar typically benefits firms that price in U.S. dollars, including many semiconductor producers that dominate Taiwan’s export basket. Moreover, any sustained disruption to oil shipments through the Strait of Hormuz could raise energy costs for Taiwanese data centres and factories, adding pressure to an industry already navigating tight global supply chains. Finally, the broader security environment in the Middle East remains a factor in the strategic calculations of Taiwan’s allies, as regional instability can reverberate through international diplomatic and defence postures that shape the island’s external security landscape.