Equity Screening with Amplitude, Float Size, and a 20-Day Range Position

Summary

This Chinese-language post describes a stock screen combining three conditions: prior-day amplitude above 1%, tradable share count no greater than 5.5 billion, and a K value below 20. The K measure places the latest close within the preceding 20-session high-low range. The example implementation intersects the qualifying sets and ranks the remaining stocks by turnover rate, taking roughly a tenth of the universe. The accompanying discussion frames the screen as a way to find moderately volatile, smaller-float shares and says the added K filter is intended to reduce volatility risk.

The post gives no backtest, benchmark, or performance evidence, so its claims about growth potential and risk reduction are unverified. It also notes that market conditions can change, strict filters may leave few candidates, and the screen omits company fundamentals. Its recommendations are to consider fundamentals, market trends, diversification, and other indicators; these are suggestions rather than tested additions. The formula and code are examples, and the ranking and measurement details should be checked before use.

Key ideas

• The screen requires prior-day amplitude above 1% and tradable shares of at most 5.5 billion.
• It calculates K from the close's location in the rolling 20-session high-low range and selects values below 20.
• The example ranks qualifying shares by turnover rate and limits selections to about one tenth of the universe.
• The post provides no historical test or evidence that the filters improve returns or reduce losses.
• It identifies changing market conditions, small candidate counts, and omitted fundamentals as limitations.

Tags

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