Alan Greenspan’s Long Boom and Bitter Backlash

Alan Greenspan died at 100 after an 18-year run as Federal Reserve chairman, from 1987 until the start of 2006. His tenure was the second-longest in Fed history, behind William McChesney Martin Jr., and it spanned four presidents, seven Treasury secretaries and a 10-year expansion from March 1991 to March 2001. During that expansion, the S&P 500 almost quadrupled, the US economy grew at an average annual pace of 3.5%, and unemployment averaged 5.5%, touching 3.8% in April 2000. He inherited inflation of 4.4% in 1987, and consumer prices rose by about 3% annually during his years in charge. That record explains why the Greenspan legend became so powerful, but it also explains why the later backlash was so severe.

Greenspan’s central-bank style was built on judgment, data fragments and market psychology. He watched narrow indicators such as commodity prices, wages, credit demand, freight-car loadings and shipping-container production, then used them to form broad conclusions about the economy. In the mid-1990s, when many economists wanted higher rates to prevent inflation, he argued that technology-driven productivity gains allowed faster growth without the usual price pressure. The Fed doubled rates to 6%, then eased three times in 1995, helping produce what he later called one of the Fed’s proudest soft-landing achievements. For anyone preparing for finance interviews, this is the point worth remembering: great policy calls are often about weighing imperfect signals before the consensus becomes obvious.

He also changed the institution. Beginning in early 1994, the FOMC started announcing policy changes on meeting days and giving reasons that hinted at future plans. That move reduced some of the Fed’s secrecy and helped shape modern expectations around central-bank communication. Yet Greenspan’s personal authority also created what critics called an “imperial” chairmanship. Alan Blinder and Ricardo Reis later praised him as “an amazingly successful chairman,” while warning about the extreme personalization of monetary policy. The lesson is uncomfortable but useful: markets love clarity, but they can become too dependent on one person’s credibility.

The harder verdict comes from the financial crisis. In his final years, subprime mortgages expanded, home-equity borrowing grew, mortgage loans were packaged into securities, and protection was sold against defaults on that debt. Fed transcripts from 2005 showed that staff and officials had identified a housing bubble, while Greenspan described the “froth” as becoming contained. By mid-2007, bank lending seized up, and in September 2008 Lehman Brothers collapsed. Greenspan later told lawmakers that faith in lenders’ self-interest had left him in “shocked disbelief.”

That admission matters because Greenspan had long opposed heavier financial regulation. The Financial Crisis Inquiry Commission later argued that decades of deregulation and reliance on self-regulation had stripped away safeguards. Greenspan defended himself by saying monetary policy could crush any bubble only at the cost of prosperity, writing that if 6.5% rates were not enough, 20% or 50% would be. That is the unresolved question at the center of his legacy: whether restraint protected growth or merely delayed the bill. Greenspan was not just the maestro of the boom; he became the case study in how brilliance, ideology and market confidence can compound into systemic risk.

Back to Blog