Checking Historical Equity Prices Against Adjusted Current Data

Summary

A user questions a discrepancy between a stock’s reported historical prices and the value returned by a platform’s current-data function. For a Chinese-listed equity on one trading date, the user reports historical opening, closing, and low prices that differ from the current-data value observed shortly after the open. The returned record also includes a price adjustment factor and previous close. A log from the prior session shows a value close to the reported historical price.

The example raises a practical data-validation issue: current or adjusted price fields may not be directly comparable with raw historical prices, especially around corporate actions or when a platform applies adjustment factors. However, the post contains no resolution, explanation from the data provider, or independent verification of the figures. It is a question rather than a demonstrated diagnosis, so the example alone cannot establish whether adjustment conventions, timing, or a data error caused the difference.

Key ideas

• The post identifies a discrepancy between reported historical prices and a platform’s current-data output.
• The returned record includes an adjustment factor, making price conventions relevant to investigation.
• Values logged on the preceding session appear consistent with the user’s cited historical data.
• The post does not resolve whether the cause is adjustment, timing, or a data-quality problem.

Tags

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