Screening Chinese Stocks for Recent Limit-Ups and a Sharp Daily Decline

Summary

This stock-selection screen looks for shares with daily amplitude above 1, a current decline between 4% and 5%, and at least one limit-up day during the previous 25 days. The document presents these filters as a way to find volatile stocks that have recently experienced both a strong rise and a sharp pullback. It suggests that selected stocks could then be examined using trading volume and capital-flow measures, but does not define those follow-up tests or provide entry, exit, or position-sizing rules.

The post warns that a prior limit-up event alone is a subjective basis for judging investment value, and that repeated limit-ups or limit-downs may add noise and make the strategy unstable. It proposes adding fundamental measures such as earnings and revenue growth and considering industry, market conditions, and policy effects. Code examples are provided as references, with an explicit caveat that implementation may require adjustment; no backtest results or returns are reported.

Key ideas

• The screen requires amplitude above 1 and a current daily decline between 4% and 5%.
• It also requires at least one limit-up event within the previous 25 days.
• The document suggests reviewing volume and capital flows after applying the filters.
• A past limit-up can be a noisy and subjective signal, so the screen may be unstable.
• The post recommends adding fundamental and market-context filters but supplies no performance results.

Tags

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