Markets And Conspiracy Theories : Planet Money Market watchers say an obscure and gloomy indicator called the Hindenburg Omen is coming into play. It looks like the market equivalent of a conspiracy theory.

Markets And Conspiracy Theories


Markets are abuzz over a Hindenburg sighting-- not the famous blimp, but an obscure market indicator that believers say presages gloom and doom.

The Hindenburg Omen is complicated, but essentially, it measures contradiction and uncertainty in the stock market. If all its conditions are met-- and this time we are only partway there-- it signals a slide in share prices.

This is the stock market equivalent of laying blame for the World Trade Center attacks on the U.S. government, or claiming that Queen Elizabeth is a member of a shadowy group of lizard people.

Scholars who study conspiracy theories tell us that the human mind desperately seeks to find order in chaos-- and that is exactly what is going on as technical analysts try hard to make sense of an erratic stock market.

And scholars who study technical analysis-- the search for patterns in financial markets-- tell us that it doesn't work very well in stock markets. Martin Sewell, a British academic, argues in a 2007 paper on technical analysis that foreign-exchange markets are the most predictable, futures intermediate, and stock markets the least predictable.

Sewell argues that so many people believe in technical analysis because of psychological reasons. If enough people repeat the claim that we are in a certain market pattern, others start to accept it without looking at the facts. People think selectively and look for evidence that confirms their beliefs, and ignore evidence that refutes it.

So back to that Hindenburg Omen-- which, by the way, is part of a family of creatively named market patterns like "Three Black Crows" and "The Cup and Handle."

For it to work as an indicator, several conditions must be met. They were on Thursday, when the prices of a good chunk of New York Stock Exchange shares hit 52 week highs and while another good chunk hit lows, among other conditions. But then the same conditions must be met again within 36 days.

Fans of the Omen, whose reappearance was first reported late last week by, say it has predicted most major market crashes for almost 25 years. Others say it has occurred many times without being followed by a market crash. Tom Petruno of the Los Angeles Times points out the Hindenburg Omen was AWOL during the market slide of May and June.