The Shanghai, Shenzhen and Beijing Stock Exchanges simultaneously implemented the detailed administrative rules for securities algorithmic trading supervision on July 7, 2026, establishing full-chain regulatory constraints targeting high-frequency quantitative algorithmic transactions and filling the long-standing regulatory gap for programmed trading on China’s A-share market.
The official rules set five core standardized restrictions to curb disorderly speculative trading. First, a daily cap is imposed on total high-frequency order submissions, limiting each single trading account to a maximum of 20 order declarations per second to eliminate false order flooding that disturbs normal market price movement. Second, programmed trading operated by northbound foreign capital and overseas quantitative institutions is incorporated into a unified cross-border monitoring system, with real-time early warning mechanisms activated for cross-border algorithmic price manipulation behaviors. Third, algorithmic strategies designed to stage layered short-selling pressure and pulsed sharp price pumping are completely prohibited to prevent extreme abnormal stock volatility. Fourth, all quantitative trading institutions are required to fully retain complete algorithm source codes and historical transaction logs for five years for regulatory inspection. Fifth, a tiered penalty system is implemented: violating quantitative firms face restricted trading access and increased margin ratio requirements, while severe violations result in permanent suspension of trading accounts.
Securities regulators issued a supplementary interpretation clarifying that the new rules do not intend to restrict normal quantitative investment, but only standardize disorderly ultra-high-frequency speculative behaviors, guiding quantitative institutional capital to carry out long-term value trading based on corporate fundamental performance data. Capital market strategists predicted that the trading activity of short-term high-frequency quantitative funds will decline temporarily, narrowing intraday market price volatility. In the medium and long term, institutional capital will shift allocation focus to performance-driven blue-chip stocks and independent innovation hard-tech listed companies, making overall market pricing more consistent with the intrinsic operating value of domestic enterprises.