What If I Had Invested Calculator (past price → value today)

How it works

Units bought = amount × (1 − fee) ÷ price then. Value today = units × (price now + dividends per share received). Total return = (value − amount) ÷ amount, and the annualized return (CAGR) = (value ÷ amount)^(1 ÷ years) − 1. You type in the prices yourself — use prices adjusted for stock splits so the past and current price refer to the same share. Dividends are counted as cash, not reinvested, and taxes are not included.

⚠ Estimates for information only — not financial advice.

FAQ

Where do I find the old price?

Your broker, the exchange or a financial data site shows historical prices. Use a split-adjusted closing price for the date you have in mind.

Does this mean I should buy now?

No. Looking back always picks winners we already know about; many investments that looked promising lost money. This only measures what happened — past returns do not guarantee future returns.

Checked 11 Nov 2026. Holding-period return and compound annual growth rate, standard definitions (CFA Institute, Quantitative Investment Analysis). Prices are entered by you; no market data is fetched. Past returns do not guarantee future returns; this is not investment advice.