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Checked August 16, 2026
What Investment Growth Comparison Chart does, with a checked example
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.
Worked example
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.