Financial Markets Simulator

Modern financial markets price two very different kinds of risk side by side: equities, whose value compounds randomly with no ceiling or floor except zero, and bonds, whose value is anchored by a promised repayment and a mean-reverting interest rate. This simulator runs both models live — a stock price under geometric Brownian motion, rendered as a scrolling bar chart, next to a bond price under a mean-reverting short-rate process, rendered as a ribbon — so you can see directly how drift and volatility shape a stock's random walk, and why a diversified portfolio pairs a volatile, growth-seeking asset with a calmer, self-correcting one.