Samsung shares hit fresh record after AI chip boom lifts profit

Samsung Electronics Co.’s shares touched a fresh record after it reported its biggest quarterly profit in more than three years, reflecting surging AI-related demand for memory chips.

South Korea’s largest company said it earned an operating profit of around 12.1 trillion won ($8.5 billion) in the September quarter, beating analysts’ projection for 9.70 trillion won, according to a preliminary earnings report. Revenue rose around 9% to 86 trillion won.

Its shares extended gains, climbing as much as 3.1% Tuesday morning in Seoul. The company will…