Robert Engle

Robert Engle is an American economist known for his work in financial econometrics, particularly in the analysis of time series data. He developed the Autoregressive Conditional Heteroskedasticity (ARCH) model, which helps to analyze and predict changes in financial markets by accounting for volatility—how much prices fluctuate over time. Engle's research significantly improved the understanding of risk and uncertainty in finance, making it easier for economists and traders to model and manage financial behaviors. For his contributions, he was awarded the Nobel Prize in Economic Sciences in 2003, sharing it with fellow economist Clive Granger.