Screening A-Shares for Intraday Declines, Accumulation, and Limit-Ups

Summary

This stock-screening proposal combines three conditions: today’s reported increase in holdings exceeds 5%, the day’s maximum decline falls between 4% and 5%, and the stock recorded at least two limit-up sessions during the prior 500 days. The document interprets the holding increase as possible institutional buying, the bounded decline as notable but limited weakness, and the historical limit-ups as evidence of strong market behavior.

It identifies broad market losses and unreliable input indicators as risks, and suggests adding screening measures, applying technical analysis, and testing different lookback periods. The accompanying code sketch uses generic technical-analysis functions as placeholders and does not faithfully demonstrate all three stated conditions, so it should not be taken as a working implementation. No backtest, measurement methodology, or evidence of predictive performance is supplied; the screen is a proposal rather than a validated strategy.

Key ideas

• The screen combines a daily increase in holdings, a bounded maximum decline, and repeated historical limit-up sessions.
• The author interprets the holdings measure as possible institutional buying, though its calculation is unspecified.
• Market-wide weakness and inaccurate indicators are cited as risks.
• The suggested code is illustrative and does not establish a complete implementation of the stated filters.
• No backtest or predictive evidence is provided.

Tags

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