Screening Stocks by Daily Decline, Price Range, and Float Size

Summary

This screening rule selects stocks with an intraday amplitude above one, a daily percentage decline between four and five percent, and a circulating-share threshold stated as no more than 5.5 billion shares. The document presents the criteria as a short-term stock screen, provides example formula and Python snippets, and frames amplitude and the daily loss as measures of volatility while float size is intended as a tradability filter. It reports no backtest results or evidence that the screen produces positive returns.

The author notes that a few technical and float-related conditions omit policy, industry, competitive, and company-specific factors. Suggested safeguards include checking fundamentals and setting exit and position-management rules. The examples also contain potential unit or field inconsistencies: the text alternates between float shares and circulating market value, and the code relies on data fields whose definitions are not clarified. The thresholds should therefore be verified against the data source before use.

Key ideas

• The screen combines intraday amplitude, a daily decline range, and a circulating-float limit.
• It is presented for short-term stock selection, with no performance results provided.
• The author recommends supplementing price filters with fundamental review and risk controls.
• The text and example code may use inconsistent units or definitions for float-related data.

Tags

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