Alan Greenspan, who ran the Federal Reserve for nearly two decades, died Monday at 100.
For anyone under 40, Greenspan is a name from a textbook - a man who spoke in riddles and steered the economy through the 1987 crash, the Asian crisis, and 9/11.
But his real legacy isn't a speech. It's a four-letter word: put.
The Greenspan Put Wasn't a Policy - It Was a Promise
A put option protects you when a stock falls. The Greenspan put was the same idea - just for the whole stock market. When things got scary, the Fed would cut rates and pump money in, cushioning the blow.
Greenspan never said it out loud, but investors believed it. After the 1987 crash, he flooded the system with cash. After the 1998 crisis and the Long-Term Capital Management blowup, he cut rates again. After the dot-com bubble burst in 2000, he slashed rates to 1% and held them there.
Each time, markets roared back. Each time, the lesson was the same: buy the dip, because the Fed has your back.
The investing masterclass you get for free inside Market Briefs explains why that mindset still drives markets today - in five minutes every morning.
The Hangover That Came After
Those 1% rates didn't just revive the economy. They set off a housing boom. Cheap mortgages led to speculation, and speculation led to the 2008 financial crisis.
Greenspan later admitted he'd missed the risks. In 2008 testimony, he said he'd found a "flaw" in his free-market thinking - that banks wouldn't self-regulate after all.
But the pattern was set. Investors learned to count on a Fed that would step in. Ben Bernanke, Janet Yellen, and Jerome Powell all faced moments where they had to choose: keep the put alive, or let markets fall. They chose the put every time.
What to Watch
The Greenspan playbook isn't dead. Powell cut rates in 2020, and we saw the fastest stock recovery in history. Today, with inflation still lurking, the put is harder to use - but markets still expect it.
The man is gone, but the era he built isn't.
If you want to understand how Fed moves still shape your portfolio, join 350,000+ investors reading Market Briefs - you'll also get a free 45-minute investing masterclass thrown in.
