Alan Greenspan, a highly influential economist and former chairman of the U.S. Federal Reserve, has died at the age of 100, according to NBC News. He led the Fed for nearly two decades, significantly shaping American monetary policy. Greenspan served as Fed chair under four presidents, overseeing a period of economic growth and navigating several financial crises. Known as “The Oracle” for his economic forecasting abilities, he championed deregulation and free markets. His tenure was marked by both praise for steering the economy and criticism for policies some believe contributed to the 2008 financial crisis. Details surrounding his death were not immediately released. His impact on the global financial landscape will be long remembered.