Screening Shanghai-Listed Stocks for Seven Consecutive Down Days

Summary

This document describes a Chinese equity screen for stocks with codes beginning with 60, turnover between three and twelve percent, and a seven-day losing streak. The stated rationale is to identify technically weak, declining stocks. It includes a Python example that fetches daily price-change data and attempts to test for a seven-day decline, although its rolling-sum condition does not by itself confirm that every individual day was negative.

The post says the screen excludes fundamentals and market sentiment, may produce too few candidates, and may fail in unusual market conditions. It recommends considering company quality, growth, sentiment, additional indicators, and risk controls. No backtest results or evidence of profitability are provided, so the screen is an exploratory filter rather than a validated strategy.

Key ideas

• The screen combines a turnover band, a Shanghai stock-code prefix, and a seven-day decline condition.
• The stated aim is to find stocks showing technical weakness.
• The sample code’s rolling sum of returns does not strictly verify that each day in the streak was negative.
• The author flags missing fundamental and sentiment analysis, limited candidate counts, and exposure to unusual market conditions.
• No empirical performance results are reported.

Tags

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