Alan Greenspan died at 100, long after the markets that worshipped him had revised their verdict. For much of his 18 years and five months as chairman of the US Federal Reserve, he was granted a deference no unelected official in a democracy should expect. Markets took his syntax as signal. Presidents kept him in office. Congress applauded what it did not always understand. Then came the financial crisis and the reputation had to be marked to market.
The kinder judgment credits him with steering the US economy through the 1987 stock market crash, the early 1990s slowdown, the Asian crisis, the Long-Term Capital Management scare, the dotcom bust, and the shock of September 11. There is evidence for that judgment. Greenspan was not a fool made powerful by accident. He had nerve in crisis, a command of data, and an instinct for political survival. In the 1990s, he read the productivity surge better than many inflation hawks and gave the American expansion room to run.
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His error lay elsewhere. He converted success into doctrine, doctrine into habit, and habit into institutional indulgence.
Alan Greenspan and the Fed put
The first entry in the Greenspan ledger is October 1987. Barely two months after he took office, Wall Street suffered its worst one-day collapse. Greenspan’s Fed supplied liquidity, reassured banks, and helped prevent a market accident from becoming a credit freeze. In the immediate circumstances, that was central banking as lender of last resort.
Markets remembered something larger. They learned that the Fed would move quickly when asset prices fell. The lesson was reinforced in 1998, when the New York Fed helped organise a private rescue of Long-Term Capital Management, and again after the dotcom bust. The phrase “Greenspan put” was crude, but it captured a real change in market behaviour. Losses would be socialised through lower rates and liquidity support. Gains would remain private.
Every emergency can be defended on its own facts. A crash in 1987, a hedge fund collapse in 1998, and the post-9/11 panic were not routine disturbances. The problem was cumulative. A central bank that responds strongly to falling markets but hesitates to lean against credit excess changes the price of risk. It need not promise rescue. Repetition is enough.
Greenspan’s bubbles and easy money
William Fleckenstein and Frederick Sheehan’s Greenspan’s Bubbles was an angry book. It had the defect of anger, and the virtue that anger sometimes brings: it kept asking whether the same error was repeated. The authors called Greenspan a serial bubble-maker, a chairman who cut rates too readily, left them low too long, and then denied that monetary policy had much to do with the wreckage that followed.
That accusation was too neat. The 2008 crisis had many authors: Wall Street securitisers, mortgage brokers, rating agencies, Congress, global savings imbalances, and regulators that mistook volume for depth. Greenspan’s responsibility was narrower and more serious. He gave cheap leverage an intellectual escort.
The dotcom collapse and September 11 gave the Fed a defensible reason to ease. By June 2003, the federal funds rate had been brought down to 1%, the lowest level in 45 years. Greenspan defended the aggression on the ground that inflation and inflation expectations were low. That was true. It was also incomplete. Consumer-price inflation was tame while credit risk, mortgage debt and asset prices were being mispriced.
A central bank cannot see every bubble in advance. Greenspan turned that limitation into a policy. Since bubbles were hard to identify, the Fed would clean up after they burst. It was a seductive doctrine, especially for a chairman celebrated for crisis management. It was also an abdication. The inability to prick every bubble is not a reason to subsidise leverage while regulators watch underwriting standards collapse.
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Alan Greenspan and the housing bubble
The housing excess was visible before it became fatal. Greenspan himself saw enough of it to use the word “froth” in 2005. He noted the sharp rise in housing valuations, the build-up in mortgage debt, the role of historically low mortgage rates, and the spread of interest-only loans and exotic adjustable-rate mortgages. Yet the tone remained clinical. The market was heterogeneous. Local excesses might not diffuse. Household equity cushions looked adequate. The danger was observed, then discounted.
His 2004 comments on adjustable-rate mortgages have acquired a harsh afterlife. Speaking about household debt, Greenspan cited Federal Reserve research suggesting that many homeowners might have saved large sums had they held adjustable-rate rather than fixed-rate mortgages during the previous decade. One speech did not create the mortgage machine. But in context, it showed the hierarchy of concerns: product innovation first, borrower exposure later.
By then, the US mortgage system was changing in ways that demanded regulatory suspicion. Subprime lending was no longer a marginal welfare story. It had become feedstock for securitisation. Low teaser rates, weak documentation, piggyback loans and option ARMs shifted risk from originators to investors and finally to households least able to bear a reversal. The Fed had authority under the Home Ownership and Equity Protection Act to act against abusive lending practices across the mortgage market. It did little with that authority until after the bubble had burst.
Greenspan’s defence was familiar. Regulators could not have predicted the timing or scale of a housing collapse. Perhaps. But they did not need clairvoyance to see incentives. Mortgage brokers were paid to originate, banks were paid to distribute, rating agencies were paid by issuers, and investors were paid to believe house prices would not fall nationally. This was not a hidden mechanism.
Alan Greenspan, derivatives and deregulation
The more damaging part of Greenspan’s record may lie outside interest-rate policy. He carried into office a deep confidence in market self-discipline, which shaped his opposition to tight oversight of over-the-counter derivatives.
In late 1990s, Commodity Futures Trading Commission chairman Brooksley Born explored federal regulation of the OTC derivatives market. Greenspan, Robert Rubin, Lawrence Summers and Arthur Levitt opposed the effort. The stated fear was legal uncertainty and harm to financial innovation. The practical result was opacity.
Long-Term Capital Management should have ended the debate. The hedge fund had built vast derivative exposures on thin capital. Its counterparties did not know the full size of its positions. The New York Fed helped arrange a private-sector rescue because a disorderly failure could have damaged major banks and investment banks. After that warning, Washington still preferred the market’s own assurances. The Commodity Futures Modernisation Act of 2000 protected much of the OTC derivatives market from regulation.
That decision mattered in 2008. Credit default swaps did not by themselves cause bad mortgages to be written. They made the losses travel farther. AIG, synthetic collateralised debt obligations and counterparty chains turned housing losses into a system-wide problem. Greenspan’s view was that sophisticated institutions could protect themselves. They protected quarterly earnings better.
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Alan Greenspan after the crash
In October 2008, Greenspan gave Congress the sentence that will follow him longest. He said he had found a flaw in the model that assumed banks and other institutions would protect shareholder equity out of self-interest. The admission was notable because it came from a man who had spent decades arguing that market discipline was superior to official restraint.
It was also carefully rationed. He admitted a flaw in the model, not a failure in public office. He accepted surprise, not negligence. He conceded that the crisis had been broader than he imagined, but continued to resist the charge that his monetary policy and deregulatory instincts had materially helped create the conditions for collapse.
The distinction matters. No serious account should make Greenspan the sole author of 2008. That would be too convenient, and too generous to others. But the opposite defence is weaker. A Fed chairman who served from 1987 to 2006, who shaped the response to crashes, who defended derivatives from oversight, who kept rates at 1% in the middle of a credit boom, and who treated housing excess as manageable local froth cannot be placed outside the chain of causation.
Greenspan’s career is therefore a warning about competence without scepticism. He was technically formidable. He could read data, intimidate legislators, and speak in paragraphs that moved bond markets without quite saying what they meant. Yet on the central question of modern finance, he trusted institutions that were being paid to underestimate risk.
His successors inherited the instruments he normalised. Since 2008, every major crisis has revived some version of the put: liquidity first, asset prices second, restraint later. The Fed balance sheet grew beyond anything Greenspan used. But the habit was recognisable. When markets broke, the central bank arrived. When markets boomed, official modesty returned.
That is why the critical obituary cannot stop with the man. Greenspan left behind more than a record of rate decisions and congressional testimony. He left behind a style of central banking that treated asset inflation as someone else’s jurisdiction, financial innovation as presumptively benign, and post-crash rescue as prudence. The bubble economy was his most durable institution.