Splits and dividends in historical data

Corporate actions can change the interpretation of a price series. A stock split changes the share count and price scale, while a dividend distributes value to shareholders.

What to look for

Adjusted and unadjusted series serve different purposes. Use a consistent adjustment method for returns and document how splits, dividends and other events are handled.

Market coverage and data availability vary by instrument and exchange. This article is educational and does not constitute investment advice.