This is the 38th year for our annual Fastest-Growing Companies list, which ranks companies based on growth in revenue, profits, and stock returns; this year’s edition tracks those metrics over the three years through June 2023. The companies featured are worth a combined $4 trillion in market capitalization and, on average, delivered an annual 42% return to shareholders over the past three years. That significantly outperformed the S&P 500 index’s 15% annual return to shareholders over the same period.