Samsung shares plunge 9% as 18-day strike threat spooks investors over billions in chip profit risk

JPMorgan warns profit hit could reach 21 trillion won

Samsung Electronics shares sank more than 9% on Friday after a labour dispute escalated at the world’s biggest memory chipmaker. An 18-day strike starting May 21 remains on the table even as Samsung offered unconditional talks, following failed government-mediated negotiations over 2026 wages and bonuses. Reuters reports union participation could involve over 50,000 workers, heightening fears of disruptions to chip production and deliveries. JPMorgan estimates operating profit impact could reach 21 trillion to 31 trillion won.