Filtering Small-Cap Robot-Theme Stocks by Volatility

Summary

The document describes a Chinese equity screen that selects stocks with daily amplitude above 1%, a robotics theme, and circulating market capitalization below 10 billion yuan. It also discusses broadening the original 2021 time filter to include data from after 2020 and adding valuation and profitability checks such as price-to-earnings, price-to-book, return on equity, revenue, and net profit.

The article provides sample indicator logic and Python-style implementation, but no backtest results or evidence that the screen is profitable. Its own critique is that theme, volatility, and size filters omit company fundamentals and may encourage chasing short-term moves. The proposed added checks are suggestions rather than validated improvements, and the examples include implementation details that may require adaptation to a specific data platform. The screen is therefore a research starting point, not a demonstrated trading strategy.

Key ideas

• The screen combines an amplitude threshold with a robotics theme and a small circulating market-cap limit.
• The original description focuses on 2021, while the proposed revision broadens the period to after 2020.
• The article suggests adding valuation and profitability measures to complement technical and theme filters.
• No performance evidence is supplied, and the author warns that narrow filters may overlook fundamental and market risks.

Tags

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