Labeling Chinese Stock Price Limits in Strategy Data

Summary

This brief Q&A explains ways to label stock price-limit events in a strategy workflow. For a one-price limit-up session, it suggests identifying a bar where the next period’s high and low are equal, then using that condition to assign a label. This is a narrow proxy for a specific pattern rather than a general method for classifying every kind of limit-up or limit-down event.

For broader labeling, the answer points to an existing price-limit-status factor that can be extracted and then used as the target label. The document offers no discussion of factor definitions, data timing, exchange-specific rules, or validation. Users should therefore check how the factor encodes limit-up and limit-down states and ensure that shifting data to the next period matches the intended prediction horizon without introducing look-ahead into model inputs.

Key ideas

• Equality between a future bar’s high and low is proposed as a way to identify a one-price limit-up session.
• The suggested shifted-price condition addresses a specific limit-up pattern, not all price-limit states.
• An existing price-limit-status factor can be extracted and repurposed as a label.
• The factor’s encoding and timing should be checked before using it in a strategy dataset.

Tags

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