Data & Methodology
Understand data sources, stock splits, dividends, corporate actions, calculation limits, and data revisions.
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How Stock Splits Affect Historical Returns
An educational guide to stock splits: what they are, how split-adjusted prices work, why historical charts can change, and the limitations of split handling in data.
Read guide → Step 2Dividends and Total Return Explained
An educational guide to dividends and total return: the difference between price return and total return, reinvested dividends, and limitations in historical calculations.
Read guide →All guides in Data & Methodology
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How Stock Splits Affect Historical Returns
An educational guide to stock splits: what they are, how split-adjusted prices work, why historical charts can change, and the limitations of split handling in data.
Data & MethodologyDividends and Total Return Explained
An educational guide to dividends and total return: the difference between price return and total return, reinvested dividends, and limitations in historical calculations.
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How do stock splits affect charts?
What is total return vs price return?
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Educational focus
Guides explain concepts, formulas, and interpretation—not buy, sell, or hold recommendations.
Transparent methodology
Calculator behavior, assumptions, and limitations are documented in our methodology pages.
Historical data context
Examples use historical data for illustration. Data sources, revisions, and gaps are disclosed.
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Content is for learning only. Past performance does not guarantee future results.