Alan Greenspan, the former chairman of the Federal Reserve who served from 1987 to 2006, has died at the age of 100.

His passing was confirmed Monday by his wife, journalist Andrea Mitchell, marking the end of an era for one of the most influential figures in modern financial history.

Greenspan’s tenure at the Fed spanned five presidential administrations and covered some of the most transformative periods in the US economy, including the dot-com boom and bust, the 9/11 attacks, and the lead-up to the 2008 financial crisis.

Known for his intellectual rigor and often elusive communication style, he became a central figure in global markets, with his speeches and testimony closely scrutinized by traders and policymakers alike.

While celebrated for overseeing a period of significant economic expansion and low inflation, Greenspan also faced intense criticism in later years for his role in the deregulatory environment that contributed to the housing bubble and subsequent financial crisis.

His legacy remains complex, viewed by some as a master of monetary policy and by others as a cautionary tale of central bank overreach.