Compare growth of multiple investments over time with interactive charts, CAGR labels, and milestone markers.
Place several investment value histories on one timeline to compare their paths, endpoints, CAGR labels, and marked milestones. Each series shows how its value changes over the periods provided, while CAGR expresses the constant annual rate connecting its first and last values. The chart compares data or scenarios; it does not establish why one investment performed differently. A frequent surprise is that two investments can have the same CAGR despite taking very different paths between their starting and ending values.
A concrete input and expected output from the current implementation.
Input
Investment A: Year 0 = $1,000; Year 1 = $1,100; Year 2 = $1,210. Investment B: Year 0 = $1,000; Year 1 = $900; Year 2 = $1,210.
Expected output
Both investments end at $1,210 and have a 10% CAGR over two years. Their chart lines differ at Year 1: Investment A is $1,100, while Investment B is $900.
For either series, CAGR is ($1,210 / $1,000)^(1 / 2) - 1 = 0.10, or 10%. CAGR matches because the starting value, ending value, and elapsed time match; the intermediate values affect the plotted paths but not this endpoint calculation.
Provide a named sequence of values for each investment across a consistent time scale. The chart displays each sequence as a separate path, making changes between observations and differences among investments visible. Milestone markers call attention to particular positions on those paths without changing the underlying values. Comparisons are clearest when all series use matching periods, currencies, and valuation conventions.
For positive beginning and ending values, CAGR is calculated as (ending value / beginning value)^(1 / elapsed years) - 1. It is the annualized geometric rate that would connect those endpoints through steady compounding. It is not the arithmetic average of the observed changes. Intermediate gains, losses, and volatility remain visible in the chart but are compressed into one endpoint-based CAGR label.
Yes, but the line heights will reflect both performance and the amount initially invested. CAGR makes endpoint growth rates easier to compare, provided external cash flows are not involved, but it does not normalize the chart itself. For a performance-focused comparison, use equal starting values or rebase every series to a common starting index such as 100.
No. It compares the values or scenarios supplied and summarizes their endpoint growth with CAGR. A hypothetical series can illustrate what a chosen growth path would look like, but neither its line nor its milestone markers guarantee future returns. The chart also does not account for risks or costs unless their effects are already included in the entered values.
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