A-Share Screen for Wide Range, a Sharp Intraday Decline, and Rising DEA

Summary

This A-share screen selects stocks with a daily range above one percent, a day's low between four and five percent below the previous close, and a rising DEA line. The article presents range and decline as short-term price conditions and DEA movement as a technical signal. Its sample code calculates exponential averages, derives DIF and DEA, and checks whether DEA rose from the prior observation; the broader sample also includes valuation and size filters.

The note warns that technical signals can be uncertain and that market conditions and individual stock differences affect their reliability. It suggests adding indicators such as MACD or KDJ and adjusting their weights, but gives no backtest, measured outcomes, or evidence that the proposed screen is profitable. The stated conditions and the sample implementation are not fully aligned, so the code should not be treated as a precise implementation of the screen.

Key ideas

• The core screen combines a daily range threshold, a specified decline from the previous close, and a rising DEA line.
• The article interprets the conditions as short-term price and technical signals.
• The example code adds size and valuation filters beyond the stated core screen.
• The article recommends additional indicators but provides no tested weighting method.
• No backtest results or profitability evidence are reported.

Tags

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