Filtering Chinese Stocks by Amplitude, Control Proxy, and Prior Limit-Up

Summary

This Chinese stock-selection post describes a screen that looks for stocks with amplitude above one and a prior-day price-to-five-day-average ratio above one, which it uses as a proxy for main-force control. It then excludes stocks that reached a limit-up condition the previous day. The stated rationale is to avoid selecting solely on recent market excitement and to favor stocks that may have more persistent potential. The page includes indicative formula and Python examples, but the implementation details are not fully consistent: the formula labels and code do not clearly define amplitude or the limit-up test, and the code compares against a first price in historical data.

Key ideas

• The screen combines a high-amplitude condition with a price-above-five-day-average proxy.
• It removes stocks that allegedly hit the upper price limit on the previous day.
• The post argues that the exclusion may reduce reliance on short-lived market attention.
• The approach omits company fundamentals and offers no backtest evidence, so its investment claims are unsupported.
• The sample implementation has ambiguous and potentially unreliable definitions for its filters.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.