In finance, "what is CAGR in finance" refers to Compound Annual Growth Rate, a metric traders often use to measure the smoothed annual growth of an investment, like the S&P 500 showing a 7.8% CAGR over the past decade despite volatility. It's a powerful tool for comparing stock performances over time. Interactive Brokers reported 3.49 million Daily Average Revenue Trades (DARTs) in August 2025, rising 29% year over year despite a marginal sequential decline. Total customer accounts increased 32% year over year to 4.05 million, driven by global expansion, innovative product launches and rising investor participation. The CAGR of client DARTs of Interactive Brokers stands at 10.3% over the last five years (2019–2024), with momentum continuing in the first half of 2025. Technological innovations are transforming the supply chain finance market. For fintech start-ups, "what is CAGR in finance" often highlights scaling speed. Digital payment platforms achieved nearly 25% CAGR over the last 4 years, powered by global adoption of cashless transactions.