DJIA: A Clear Look at the Dow Jones Industrial Average and Why It Still Matters

Introduction

You’ve probably seen three letters pop up when watching the news or checking the finance section of an app—DJIA. It is almost referred to as the economy’s pulse. “So the Dow is up today,” a voice says and everyone is just a little bit more calm. But what is the DJIA and should it even receive so much attention? In the past, I was nodding and paying attention in my head but I spent some time digging in and absorbing. I discovered the Dow Jones Industrial Average to be easier to understand—and yet more baffling—and more unusual than one would imagine. So here in this article I want to take you through the history, the functioning, its definition and whether it’s telling us anything useful about the world of money anymore.

1. The DJIA Does NOT Measure.

The DJIA at its essence is a stock market index. This is the way it works: It measures the performance of a portfolio of companies and reduces it to a single number. If it goes up or down, it will tell you the instant snapshot of the performance of those specific companies on a certain day.

The Dow represents 30 major, established firms from the United States. The above are not casual selections. They’re familiar names; most of us interact with their business without giving it a second thought, think giants in technology, retail, banking, healthcare and consumer goods. These are large companies and they have an impact, and that’s why their performance is often seen as a barometer for the health of all of corporate America.

Here’s one thing to know, right off the bat: The Dow won’t be responsible for the entire market. It’s a very small piece in terms of companies, 30. It is one of the main reasons why analysts debate the significance of it; I will cover this later.

2. When Did the 0.25 Come from in the 0.25 m² of the Outside of the House?

The Dow has a long history. The founder of the group was Charles Dow, whom was a journalist, and his business partner, Edward Jones who founded it back in 1896. This is how the “Dow Jones” name got its origin. Initially, the index monitored only 12 companies and the majority were dealing with heavy industry, railroads, cotton, sugar, tobacco, and so on. Hence, the term “Industrial” is there even though many of today’s members have no connection whatsoever to factories.

The list has been a constantly shifting one over the 100 plus years. As the economy evolves businesses are purged when they become less relevant and replaced by new businesses. The index’s name, although a bit archaic these days, is what keeps it fresh. Frankly, when I first learned of how long the Dow has been in existence it helped to put everything into perspective, it’s not a new gimmick, it is one of the oldest methods of tracking the market.

3. The Dow’s Formulation

It is at this point that the DJIA deludes people. You may think it is as easy as taking the sum of the prices of every one of the 30 companies and dividing it by 30. It was more or less the original concept but it’s not so simple anymore.

The Dow is what is called a price-weighted index. This means that companies that have higher share prices have a bigger influence on the index than companies with lower share prices, even though the companies might have different absolute sizes. So a firm trading at
400

With this scenario, 400asharecanswingtheDowmorethanafirmtradingat90 shares a dollar, even though the second firm is much more valuable on the aggregate basis.

The Dow Divisor is a special number used to standardize the stock price calculation in cases such as stock splits. The total of the share prices is divided by this adjusted number. The divisor is adjusted over time to prevent artificial rate “jumps” in the index. Technically it may sound complicated, but its purpose is straightforward: to maintain the Dow on the same level year after year.

4. It’s Because People Pay So Much Attention to It.

So, why is the Dow quoted in all places when it only involves 30 companies? Some of it is old news. It’s old enough to be used as the standard abbreviation for the “stock market. It is preferred by journalists because the number is simple to report on, and simple to follow by the common people.

There’s also a mental aspect. The Dow is a good indicator of investor sentiment. When the confidence is strong, these large, secure companies attract capital and the index rises. Those that have fear pull back and it falls. Even though it is a limited indicator, it is a very real one of people’s attitude towards the economy.

The Dow serves as a convenient temperature check for every-day investors. Hundreds of companies need not be studied to obtain a general idea of the direction of the day. That convenience is a substantial part of the reason why it won’t go away.

5. The Criticisms Worth Knowing

You would not hear the truth if I left out the bad things. There are many experts who believe that the Dow is no longer a valid analytical tool.

Price-weighting system is the biggest grievance. Many modern indexes use a “total market value” approach, which means that the companies are weighted based on their total value. This is a more accurate indicator of true economic power. Using a price approach as Dow does could allow a very strong voice to companies, just because the share of the company happens to have a high price tag.

The second problem is the small sample size. Thirty companies can’t monitor thousands of publicly traded companies in a market. Breadth indexes which follow hundreds of companies generally provide a more comprehensive indication. For this reason, many professionals rely on broader indicators when they wish to get a more thorough understanding of the market; utilising the Dow as more of a numbers game than a true tool.

6. The Dow Has Other Indexes to Match.

It’s useful to compare Dow with its peers to truly grasp its essence. There are also more comprehensive indexes that measure a wider range of large companies by size, providing a more comprehensive measure of overall market performance. Also, technology-based indexes are full of innovative companies, which can see bigger ups and downs in their movements.

The Dow is a lone rider. It is older, it’s narrower, it’s on a different math. None of that makes it worthless, it’s just that you should read it accordingly. I like to think of the Dow as a place I’ve seen before, but not a map of the entire thing, but a place that’s familiar and understood by most people.

7. But Should You Follow the DJIA?

But what about the average investor looking to understand the markets? My opinion is that there’s some reason to keep an eye on the Dow, but not with high hopes. Intake as a quick daily signal, a conversation starter, a rough gauge on sentiment. Never consider it as the one size fits all solution for the economy or as the sole basis for a serious investment decision.

When you’re really thinking of your finances, it makes sense to think of other indicators in addition to the Dow. Consider the DJIA just one part of a larger chorus; an important, and well-known, individual voice, but it’s not the most important or most well-known one.

Conclusion

One of those sorts of things that we don’t question, because it’s so much a part of our financial world. But if you take a closer look, it looks like a very interesting blend of history, psychology, and an oddly quirky math. It’s more than 100 years old, covers only 30 companies, employs a price-weighted formula that befuddles newcomers, and remains the go-to number for everyone! It comes with some limitations and there are smarter tools for in-depth analysis. However, as a convenient way to gauge the market quickly and easily, the DJIA has gained its significance. Then the next time it appears on a screen, you will know for sure what that number is really saying — and what it isn’t.

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