The KOSPI stock market index recorded a historic 8.46% surge on June 12, 2026, rebounding sharply from a recent 8% decline that triggered a trading suspension. This rally across Asian markets, including Japan’s Nikkei 225, followed an announcement by President Trump of a deal to end the US-Iran conflict, which is expected to reopen the Strait of Hormuz and potentially cool global oil prices.
South Korea’s KOSPI stock market index has risen by 8.46%, marking the largest gain in the index’s history. The surge comes days after the KOSPI experienced a 8% dip, which caused trading to be suspended for nearly 20 minutes due to a circuit breaker.
The Asian stock market rally comes after President Trump announced a deal to end the US-Iran conflict. President Trump added that the deal will lead to an immediate reopening of the Strait Of Hormuz, which may cool off global crude oil prices.
Japan’s Nikkei 225 has risen by 3.5% on the same day. The Indian Sensex and Hong Kong’s Hang Seng are also following a similar trend.
The semiconductor sector seems to have recouped its losses from the sell off earlier this week. The stock market sell off came after increased tensions in the Middle East and higher than anticipated inflation numbers in the US.
Japan is expected to raise interest rates to 1%, the highest in 31 years. The US is also expected to keep rates higher for longer to combat rising CPI numbers.
Many also attribute the stock market dip to the upcoming IPOs of SpaceX, Anthropic, and OpenAI. SpaceX is set to go public later today with a valuation of nearly $2 trillion.
