What 1987 Actually Teaches

Thirty-nine years ago today the Dow fell 22.6%. The lesson is not the one usually drawn.

The Close

The last completed session was Friday, and it was a poor one. The Nasdaq Composite fell 2.1% to 26,140.03, finishing the week down 4.5% — its worst since June. The S&P 500 lost 1.1% to 7,659.44. The Dow slipped 0.3% to 52,002.41 but held a 0.7% weekly gain.

Ahead of today's open the mood has lifted. Nasdaq futures are up around 1%, S&P futures about half a percent, and Brent crude has eased to roughly $108.50 from Friday's close near $110. Which makes this a good morning to talk about the date rather than the tape.

One Big Thing

On October 19, 1987, the Dow Jones Industrial Average fell 508 points in a single session. In percentage terms — 22.6% — it remains the worst day the index has ever had, and it is not close. Exchanges around the world went with it. New Zealand's market lost 60%.

Then almost nothing happened. The Dow recovered about 57% of the loss within two trading sessions. It was above its pre-crash high in under two years. There was no recession. The largest one-day collapse in the history of American equities turned out to be, economically speaking, an event that happened to the stock market and very little else.

People usually stop the story there, and draw from it the comforting conclusion that crashes are noise. I think that reads the wrong lesson off the right facts. The interesting question is why 1987 was survivable, and the Fed's own historians answer it plainly. Donald Kohn, later the Fed's vice chairman, observed that the decline was not associated with a deposit run or any other problem in the banking sector. Nobody's lender failed. Nothing had to be unwound.

1987 was survivable because prices fell and debts did not. That distinction is the whole thing.

Compare 2008, where the fall was slower, shallower day to day, and vastly more destructive — because that one ran through the banking system. Same asset class, completely different consequence. The variable was never the size of the drop.

The Chart That Explains It

The first four bars are a full week, and that week was described everywhere as brutal. The last is a single Monday afternoon thirty-nine years ago. Keeping the two on the same axis is a useful corrective to the language the market uses about itself.

The Deeper Read

Here is where the anniversary stops being reassuring. The thing that made 1987 harmless is the precise thing currently in question.

Last week's selling was not really about valuations. It followed a scare over how the AI build-out is financed — borrowed money rather than cash flow. CoreWeave's bonds were the tell: its 9% notes fell to around 80 cents on the dollar, yielding roughly 15%, with credit-default pricing implying something close to a 60% chance of default inside five years. Those are debt prices, not share prices.

I am not predicting anything from that, and one stressed borrower is not a banking crisis. But it does mean the 1987 analogy cuts both ways. If this turns out to be a repricing of expectations, history says markets absorb those and move on. If it turns out to be a repricing of debt, the relevant precedent is a different and much less comfortable one. There is also no Greenspan put on offer this time: the Fed that cut and promised liquidity within a day in 1987 is a Fed currently discussing whether to raise again.

What This Means For You

When the next frightening week arrives — and one always does — the useful question is not how far prices fell. It is whether anybody's debts went bad. A 20% drawdown in a market where everyone can still pay is painful and temporary. A 20% drawdown that takes lenders with it is the other kind. Those two look identical on the first morning and nothing alike two years later.

You can watch for it without being a credit analyst. When a company's shares fall, that is an argument about its future. When its bonds fall at the same time, the argument has changed to whether it survives. That single distinction will tell you more than most of what you read.

This week supplies evidence rather than theory: Netflix and General Motors report Tuesday, Meta and Tesla on Wednesday, and the Fed meets October 27–28.

— Anthony

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