Why CAGR Can Hide Year-to-Year Volatility

Why identical endpoints produce identical CAGR even when hypothetical paths differ, and why CAGR does not show volatility or interim cash flows.

Published: Published 22 Aug 2026
Updated: Updated 22 Aug 2026
Reading time: 6 min read

This article is for education and general information. See the Financial Disclaimer before using it for an important decision.

CAGR knows the endpoints, not the path

The calculator receives beginning value, ending value and duration. It receives no year-by-year values, so it cannot observe the size, timing or frequency of movements between the endpoints.

Identical beginning values, ending values and durations therefore produce identical CAGR. The result remains the same even when one hypothetical path changes gradually and another hypothetical path rises and falls sharply before reaching the same endpoint.

Controlled hypothetical endpoint comparison

Both hypothetical cases below begin at ₹1,00,000 and end at ₹2,00,000 after five years. No actual security, fund, index or market history is represented, and no intervening annual values are supplied to the engine.

Hypothetical paths with identical engine inputs
Hypothetical path	Beginning value	Ending value	Duration	CAGR
Path with smaller interim movements	₹1,00,000.00	₹2,00,000.00	5 years	14.87%
Path with larger interim movements	₹1,00,000.00	₹2,00,000.00	5 years	14.87%

The shared CAGR does not establish shared volatility

Matching CAGR does not mean matching volatility, risk or year-by-year returns. CAGR is a smoothed endpoint rate and does not prove that its displayed percentage was actually realized in every year.

CAGR also does not model contributions, withdrawals, dividends or other interim or dated cash flows. It is not a forecast, guarantee or determination of investment quality.

Return to CAGR Explained for the complete boundaries, or compare the annualized result with absolute return.

Frequently asked questions

Can two different paths have the same CAGR?

Yes. If their beginning value, ending value and duration match, the calculator produces the same CAGR even if their hypothetical interim movements differ.

Does CAGR measure volatility?

No. The calculator has no year-by-year value series and cannot measure movement between the endpoints.

Is CAGR a forecast of future performance?

No. It annualizes the supplied endpoint relationship and does not predict or guarantee a future result.

investments

CAGR Explained: Beginning Value, Ending Value and Years

What CAGR means, how beginning value, ending value and whole years produce an annualized growth rate, and what the result leaves out.