量化交易来势汹汹，散户又该怎么办？

Core Viewpoint - The rise of quantitative trading has significantly altered the structure of the A-share market, creating both opportunities and challenges for retail investors [6][8]. Group 1: Quantitative Trading Impact - As of May 2025, quantitative trading accounts for 25% to 30% of trading volume in the A-share market, with some days approaching 35% [3]. - Quantitative trading operates at a speed of a few hundred milliseconds, compared to the average five seconds for retail investors, creating a substantial speed advantage [5]. - The presence of quantitative trading has introduced a new level of liquidity to the market, but it has also led to perceived unfairness for retail investors [6]. Group 2: Data and Strategy Disparity - Quantitative institutions process terabytes of data daily, including historical market data and social media sentiment, while retail investors rely on fragmented news and financial reports [4][6]. - The disparity in data access and processing capabilities gives quantitative firms a significant edge in strategy execution [6]. - High-frequency trading accounts for approximately 60% of total programmatic trading volume, acting as a "digital scythe" that capitalizes on the slower reactions of retail investors [5]. Group 3: Regulatory Environment - The China Securities Regulatory Commission (CSRC) is implementing a gradual regulatory approach to enhance the oversight of quantitative trading, aiming to maintain market fairness while allowing for efficiency improvements [6]. - New regulations set to be implemented in October will shift the focus from speed to the effectiveness of trading strategies, indicating a potential evolution in the competitive landscape of quantitative trading [7]. Group 4: Future Considerations for Retail Investors - Retail investors face a choice: adapt to algorithmic trading or risk being outpaced by it [8]. - The increasing availability of low-threshold quantitative tools from brokerages may provide retail investors with opportunities to engage in quantitative trading [6].