Gain = Returned − Invested

ROI = (Returned − Invested) ÷ Invested × 100%

Annualized ROI = ((Returned ÷ Invested)^{1 / Years} − 1) × 100%

Investment years: actual days ÷ 365.2425 for dates, or supplied years/months/days converted to years. This chart illustrates a smooth compound path, not actual historical returns.