Money Talks

The Stock Market Isn’t So Irrational After All

The stock market swings after Pfizer’s vaccine announcement prove that the market isn’t as wildly exuberant as many believe

James Surowiecki
Marker
Published in
5 min readNov 12, 2020

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Illustration: Pablo Delcan

Money Talks is a column that explores what happens when business, the economy, and culture collide.

If there’s been one cliché that has defined the stock market over the past eight months, it’s that “the market is disconnected from the real economy.” With stocks hitting all-time highs in the midst of the coronavirus pandemic — even though the U.S. economy was in recession and unemployment had risen sharply — it was easy to argue that stock prices had lost connection to economic reality. This was a crazy market, fueled by cheap money from the Fed and unrealistic hopes for the future.

Then came Monday. After news broke on Sunday that Pfizer’s new Covid-19 vaccine candidate was doing exceptionally well in clinical trials, stock futures soared overnight, and the S&P 500 opened the next morning up more than 4%. While at first glance, you might assume that was just further evidence that this is a market governed by emotion rather than economic fundamentals, under the surface something interesting was happening. On the whole, the market may have been up on Monday, but that…

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James Surowiecki
Marker
Writer for

I’m the author of The Wisdom of Crowds. I’ve been a business columnist for Slate and The New Yorker and written for a wide range of other publications.