Screening Robot-Themed Small Caps by Amplitude and Prior-Day Limits

Summary

This document describes a short-term Chinese equity screen combining daily amplitude above 1%, membership in a robotics concept group, circulating market capitalization below 10 billion, and no limit-up move on the prior day. It frames the combination as a way to find active, smaller companies while avoiding stocks that may already have experienced an extreme price surge. It also sketches formula and Python implementations of the conditions.

The rationale is qualitative; the document gives no backtest, performance figures, or evidence that the screen predicts returns. It warns that amplitude alone does not capture liquidity, that short-term signals omit longer-term company value, and that parameters can lose relevance as market conditions change. It suggests adding volume, liquidity, fundamentals, and industry context, then updating data and evaluating the revised screen. The proposed additions are guidance rather than tested elements of the stated selection rule.

Key ideas

• The screen selects robotics-themed stocks with amplitude above 1% and circulating market capitalization below 10 billion.
• It excludes stocks that hit the daily price limit on the prior trading day.
• The stated rationale is to target active smaller stocks while avoiding some recently overheated names.
• Amplitude does not measure liquidity, and the screen omits longer-term company fundamentals.
• The document recommends adding volume, liquidity, fundamental, and industry measures, but provides no performance evidence.

Tags

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