2026KOSDAQ declineKOSPI market closing April 6Samsung Electronics earningssemiconductor recoverystock volatilityUS-Iran 45-day ceasefire hopes 6 4월 2026 April 6, 2026, KOSPI Closing Market Review: Samsung’s Earnings and Middle East Ceasefire Hopes Drive Market Moves 서울특별시 Yeouido On April 6, 2026, the Korean stock market experienced significant movements driven by growing optim…