A Chinese Stock Screen Using Intraday Timing, Price Range, and Chart Shape

Summary

The post proposes screening Chinese equities for a price range greater than one, excluding stocks marked ST, and selecting before 10 a.m. It adds a five-session limit-up approach and a rounded, arc-shaped chart pattern. Its sample data logic computes a range measure from the high, low, and previous close, filters by name and time, and checks whether the close equals the rolling five-session maximum. The author suggests adding indicators such as moving averages or MACD and defining the arc pattern more precisely.

No performance results or supporting backtest are given. The central chart-shape condition remains subjective and is not implemented in the sample, so two analysts may select different stocks. The sample's range calculation and five-session high check are only approximations of the described rules, and the relationship between early selection time and the data being screened is not fully explained. The post itself identifies subjective pattern interpretation as a source of selection bias; the screen would need explicit definitions and historical testing before its behavior could be assessed.

Key ideas

• The proposed screen combines a range threshold, exclusion of ST-designated stocks, and selection before 10 a.m.
• It also invokes a five-session limit-up method and an arc-shaped chart pattern.
• The sample code approximates the range and rolling-high filters but leaves the chart pattern unimplemented.
• The arc pattern is subjective, creating potential disagreement and selection bias.
• The post recommends defining the shape quantitatively and testing refinements with additional indicators.

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