Bitcoin's price surge past $100,000 in 2025 has led South Korean retail investors to shift from buying to selling. The central bank highlighted that 91.2% of Korean crypto trading volume is dominated by the top 10% of accounts, sparking concerns over potential market manipulation. As Bitcoin's momentum shifts, hot money is reportedly moving into Korean stocks and leveraged U.S. ETFs. The central bank cautioned that increased institutional and ETF access could amplify market risks amid ongoing global volatility.