South Korean Retail Investors Lose $250 Million to Stock Scams

South Korean retail investors reported about $250 million in fraud losses during the first half of 2026. Police investigated 3,506 stock-tip chatroom cases involving 336 billion won, or about $246.6 million, from January through June.

The losses increased 19.8% from the same period last year, while case numbers rose 4.1%. Scammers exploited sharp swings in South Korea’s KOSPI to target investors seeking quick gains. Fraudsters often used social-media comments to move victims into private chatrooms, where they posed as financial experts or brokerage employees. Some schemes also used fake investment apps.

Meanwhile, lawyers said inexperienced investors faced greater risks as market volatility increased. In one Cambodia-linked operation, police said suspects defrauded 59 South Koreans of about 9.9 billion won. South Korea’s financial regulator said law enforcement agencies handle investigations into these scams.