Measuring the stock that has risen the most ever in absolute percentage terms over long multi-decade horizons points toward legendary corporate compounding pioneers like Monster Beverage, Apple, Microsoft, and Amazon, which generated astronomical percentage gains exceeding tens of thousands of percent from their initial public offerings. Early investors who held shares through decades of splits and hyper-growth witnessed generational wealth creation. However, calculating precise historical champions depends heavily on whether gains are measured from initial public offering prices, split-adjusted values, or total return metrics including reinvested dividends over extended multi-decade spans.