Asian Stocks Surge 2-6% on US-Iran Deal; KOSPI Leads With 6% as Oil Tumbles

The Quick Take

• Asian stocks surged Monday with the broad Asia index up 2.1% and S&P 500 futures rising 1% on the US-Iran peace deal.
• South Korea's KOSPI led Asian gains with a near 6% surge, while Japan's Nikkei 225 rose approximately 5%.
• Oil prices fell sharply on the deal, providing direct inflation relief for all Asian oil-importing economies including India.

Asian equity markets opened the week with broad-based gains following the US-Iran peace deal announcement, with a gauge of Asian stocks rising 2.1% and S&P 500 futures advancing 1% simultaneously. South Korea's KOSPI was the standout performer, surging nearly 6%, while Japan's Nikkei 225 added approximately 5% — among the largest single-day advances for both indices in recent months. For India specifically, the deal provides two immediate tailwinds: oil price declines that reduce import costs and current account deficit pressures, and improved global risk sentiment that typically draws foreign institutional investors back to emerging market equity allocations.

The scale of the KOSPI and Nikkei moves — both approaching 5-6% on a single geopolitical development — underscores how deeply embedded the Hormuz closure risk premium had become in Asian equity valuations. Korean and Japanese markets are among the world's largest net oil importers, making the Hormuz reopening's inflationary relief particularly pronounced in domestic earnings multiples. The S&P 500 futures advance suggests the risk-on sentiment extends beyond Asia into US pre-market trading, positioning global equity markets for a potentially synchronized rally if the deal proves durable and early implementation signals remain positive.

Investors should watch whether Indian equity markets (Sensex, Nifty 50) open with similar percentage gains when the Monday session begins, and whether foreign institutional investor flows into Indian equities reverse their recent risk-off pattern. The macro variable that determines sustainability is the US-Iran deal's implementation pace — the Strait of Hormuz must actually reopen to oil traffic for the geopolitical risk premium to fully unwind across Asian markets. Central bank responses during the coming week will also be critical, as the combination of falling oil prices and improving risk sentiment could shift rate expectations in both directions for Asian monetary authorities.

Synthesized from 1 source.