A-Share Screening by Trading Range, Float Market Value, and Company Type

Summary

This note outlines a Chinese equity screen based on a price-amplitude threshold of at least 1, circulating market value of at least 10 billion yuan, and a company-type classification labeled as a high-quality enterprise. It presents the combination as a way to consider price movement, company scale, and business characteristics together. The article includes a formula example and a Python sketch that checks market value, calculates amplitude, and attempts to classify firms using business descriptions.

The note reports no backtest, performance figures, or defined method for determining company quality. It explicitly flags the classification as vague and potentially subjective, and says the screen could miss stocks benefiting from sector themes. The example code uses technology-related business text as a proxy, which does not establish that a company is high quality; its amplitude calculation also spans available daily observations rather than specifying a consistent sampling window. The author recommends defining company traits more carefully and combining technical indicators with sector and company research.

Key ideas

• The proposed screen uses amplitude of at least 1%, circulating market value of at least 10 billion yuan, and a high-quality enterprise classification.
• The rationale combines volatility, company scale, and business characteristics.
• The article gives formula and Python examples but no performance evidence or formal quality definition.
• The company-type filter is subjective, and a technology business description is only a rough proxy.
• The author recommends clarifying the classification and adding technical and sector analysis.

Tags

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