A-Share Screen for High Amplitude, Recent Limit-Ups, and the 10-Day Average

Summary

This document describes a technical screen for Chinese stocks. It selects shares with daily high-to-low amplitude above 1%, at least one limit-up day in the prior 25 sessions, and an opening price near the 10-day moving average. It includes example implementations in a charting formula and Python, using adjusted daily stock data and a rolling count of limit-up events.

The rationale is that larger amplitude may indicate opportunity as well as risk, a recent limit-up may reflect investor interest, and an opening price near the moving average may offer a possible entry point. The document provides no performance results or tested evidence for these assumptions. It cautions that historical signals may not predict future returns, proximity to a moving average does not establish a price bottom, and volatile or limit-up stocks can carry substantial risk. It suggests combining the screen with other technical and fundamental analysis.

Key ideas

• The screen requires amplitude above 1% and a limit-up event within the prior 25 sessions.
• It also checks whether the opening price is within roughly five percent of the 10-day moving average.
• The examples show how to implement the conditions with daily data and a rolling window.
• The document gives a rationale but no backtest results to establish predictive value.
• Recent limit-ups and large price ranges can accompany elevated risk.

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