韩国KOSDAQ市场价格快速飙升，交易所紧急启动边车机制，程序化交易被冻结5分钟

Core Viewpoint - The Korea Exchange has activated the Sidecar mechanism to suspend algorithmic trading on the KOSDAQ market due to rapid price increases in KOSDAQ 150 futures and index, aiming to mitigate excessive market volatility and prevent systemic risks [1][2]. Group 1: Mechanism Details - The Sidecar mechanism is a routine risk control system in the Korean capital market designed to temporarily freeze algorithmic trading quotes during significant fluctuations in futures and spot indices [1]. - When triggered, all algorithmically submitted buy and sell orders are paused for 5 minutes, after which normal trading resumes automatically [1]. Group 2: Market Context - The KOSDAQ market serves as a trading platform for small and medium-sized innovative enterprises in South Korea, similar to the NASDAQ in the United States, and includes many technology, biopharmaceutical, and information technology companies [1]. - The KOSDAQ 150 index is a benchmark index composed of 150 representative stocks from this market, widely regarded as a core indicator of the overall performance of South Korean small-cap growth stocks [1]. Group 3: Global Trading Trends - Algorithmic trading is increasingly dominating trading volumes in major global capital markets, with its high-frequency and automated nature enhancing market liquidity but also potentially amplifying price volatility [2]. - Various markets, including South Korea, have implemented circuit breakers or suspension mechanisms for algorithmic trading to address the risks of amplified price fluctuations in specific market conditions [2].