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Tags: Stock Markets

The Dow Jones Industrial Average Is a Big Lie

By David Zeiler, Associate Editor, Money Morning • @DavidGZeiler • April 22, 2014

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The Dow Jones Industrial Average is the most inaccurate and distorted of all stock indices - and yet it remains the most followed stock market index.

Many of the Dow's flaws are well-known, but that hasn't stopped people who should know better from following its every move.

Dow Jones Industrial AverageThere are plenty of reasons why the retail investor needs to take the Dow Jones Industrial Average with a grain of salt.

Even the most basic aspects of the DJIA are flawed. When Charles Dow created the index in 1896, it consisted of 12 companies. In 1916 the number was increased to 20, and in 1928 increased again to 30, where it has remained.

In both of those cases, and more than 50 times in the history of the Dow Jones Industrial Average, the component companies were changed. Such changes led to the creation of a clunky method to keep the index price consistent, the "Dow Divisor."

The problem is that all those changes have invalidated the usefulness of an index.

Think of it like this: You can compare the price of General Electric Co. (NYSE: GE) stock today to GE stock in 1975, 1985, and 1995 and know (as long as you've adjusted for stock splits) that you're comparing apples to apples.

But the Dow components of today are different than the Dow components of 1975 or 1985 or even, for that matter, 2005. With the Dow Jones, you're comparing apples to oranges to pears to mangos.

Another huge problem with the Dow is how it's weighted, using price instead of market cap.

That means oil giant Exxon Mobil Corp. (NYSE: XOM), priced at about $100 a share, has less weight in the index than Goldman Sachs Group Inc. (NYSE: GS), which trades at about $160 a share, even though Exxon Mobil has a market cap six times larger than Goldman's.

So a Dow component with a low stock price can make a huge move up or down and barely budge the index, but a component with a high price can cause significant changes in the index with much smaller moves.

But it's another quirk of the Dow Jones Industrial Average, one that few people consider, that really calls into question any value it might have as a valid measure of the markets.

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David ZeilerDavid Zeiler

About the Author

Browse David's articles |

David Zeiler, Associate Editor for Money Morning at Money Map Press, has been a journalist for more than 35 years, including 18 spent at The Baltimore Sun. He has worked as a writer, editor, and page designer at different times in his career. He's interviewed a number of well-known personalities - ranging from punk rock icon Joey Ramone to Apple Inc. co-founder Steve Wozniak.

Over the course of his journalistic career, Dave has covered many diverse subjects. Since arriving at Money Morning in 2011, he has focused primarily on technology. He's an expert on both Apple and cryptocurrencies. He started writing about Apple for The Sun in the mid-1990s, and had an Apple blog on The Sun's web site from 2007-2009. Dave's been writing about Bitcoin since 2011 - long before most people had even heard of it. He even mined it for a short time.

Dave has a BA in English and Mass Communications from Loyola University Maryland.

… Read full bio

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H. Craig Bradley
H. Craig Bradley
9 years ago

BUCKLE-UP

The auricles of the DOW often change-out member companies right around market tops, just before a change in trend. Thus, changes in the DOW components could be viewed as another contrarian indicator. Soon thereafter, the stocks, newly listed and old alike, head down in a big correction or even bear market. This time is probably no different. Newly listed Visa and Goldman Sacks should be at the leading edge of the next recession. The consumer, not exactly at his/her best, will be headed to the ER for some critical care soon. Investment bankers can plan on a ambulance transport, as well. Better fasten your seat belts.

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jordy
jordy
9 years ago

Wal Mart replaced Woolworths

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Richard
Richard
9 years ago

One has to wonder if that is the case, could that be part of the reason why W.Buffet suggests that investing in an index fund is a wise strategy. If the index is skewed to growth companies shouldn't it do better than average in the long haul. That and the savings from less fees.

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