A Chinese Stock Screen Combining High Volume, Opening Gaps, and a Date Filter

Summary

This Chinese-language post describes a stock-selection screen using three conditions: reported trading volume above 10,000 lots, an opening price above the previous close, and a date filter for 2021. It also says to rank candidates by a volume-ratio measure. The author interprets stronger volume as possible buying interest and a higher open as a sign of positive expectations. These are screening heuristics rather than demonstrated causal signals.

The post acknowledges that heavy buying can be followed by a pullback and that an opening gap may reflect expectations the stock does not meet. It proposes adding measures of inflows and outflows, opening-price volatility, and additional time periods; its final proposed screen includes opening-price volatility below 5%. However, the sample code is incomplete, and the post provides no universe definition, backtest results, execution assumptions, or evidence that the rules worked. Its date restriction is historical, so the stated screen is not a current selection recipe without adjustment.

Key ideas

• The screen selects stocks with reported volume above 10,000 lots and an open above the previous close.
• It proposes ranking candidates by a volume-ratio measure and restricting observations to 2021.
• The final rules add an opening-price volatility filter below 5%.
• The post identifies pullbacks after heavy volume or high opening gaps as possible risks.
• No performance results or complete implementation are provided.

Tags

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