Screening Chinese Stocks by Amplitude, Main-Force Control, and Float Value

Summary

This Chinese equity-screening note proposes selecting stocks with amplitude above 1, a main-force-control condition from the prior day, and floating market capitalization above 10 billion yuan. It interprets amplitude as a sign of greater price movement, the control measure as an indication of large-player activity, and the capitalization threshold as a way to focus on larger companies. It includes formula references and a Python example that filters by amplitude and market capitalization, but the example does not visibly implement the stated prior-day control criterion.

The author flags that the capitalization cutoff may leave too few candidates, that a longer holding horizon requires patience and stable capital, and that a narrow set of factors can produce concentrated holdings. Suggested refinements include adding fundamental, technical, and valuation measures alongside risk controls. The article gives no backtest, selection counts, or return evidence, and the “main force” measure is not explained or validated. The screen is therefore a rough selection concept rather than an established source of long-term returns.

Key ideas

• The proposed screen combines daily amplitude, a prior-day main-force-control condition, and a floating-capitalization threshold.
• The note associates higher amplitude with greater market fluctuation and larger capitalization with larger firms.
• The sample code filters amplitude and capitalization but does not clearly apply the control condition.
• The author identifies candidate scarcity and concentrated holdings as risks.
• Fundamental, technical, and valuation inputs are suggested as possible additions, with no performance evidence provided.

Tags

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