Samsung Electronics is trading at KRW 225,000, 3.02% down, as a sharp U.S. technology-stock sell-off and renewed concerns over AI-investment returns weighed on South Korean semiconductor shares. - On November 2, 2026, foreign investors also sold Samsung shares during the session. - The move appears tied to broader technology and AI-investment sentiment, not a new Samsung-specific negative catalyst. - The reported TCL CSOT stake acquisition is strategic news; reporting does not identify it as the cause of the drop.