Why the Dow Is a Dumb Index
The Dow Jones industrial average is hopelessly archaic.
The Dow Jones industrial average is hopelessly archaic. When it was created in 1896 with just 12 stocks, its chief selling point was that it could be quickly calculated using only pencil and paper. Today, the Dow consists of 30 large companies, chosen by editors of the Wall Street Journal.
The small number of stocks is one shortcoming. By contrast, other important benchmarks of the U.S. stock market contain 500 stocks (Standard & Poor's 500-stock index), 1,000 stocks (Russell 1000) and about 5,000 (Wilshire 5000).
Moreover, Journal editors tend to add companies after they've passed their prime, giving rise to the argument that entering the Dow is more curse than blessing. Over the past ten years, new Dow stocks lost an average of 20% in the first year after their inclusion. Microsoft is 38% below its level when it was added in late 1999. American International Group, which entered in 2004, is already out of the Dow. Bank of America is off 58% since joining in early 2008.
From just $107.88 $24.99 for Kiplinger Personal Finance
Be a smarter, better informed investor.
Sign up for Kiplinger’s Free Newsletters
Profit and prosper with the best of expert advice on investing, taxes, retirement, personal finance and more - straight to your e-mail.
Profit and prosper with the best of expert advice - straight to your e-mail.
The Dow's biggest fault is that it weights stocks according to share price rather than market capitalization. As a result, a 1% move in the price of IBM, which closed at about $120 in mid August, counts about six times as much in the Dow as a 1% change in Intel, which closed at $19, even though IBM's market value is only 51% greater than Intel's.
Gus Sauter, chief investment officer at the Vanguard Group, says fund managers don't pay attention to the Dow. "If you're trying to get a handle on what the market is doing, you'll look at the S&P 500 or a total-market index." Perhaps the Dow's biggest accomplishment is that, warts and all, it has retained its status as the public face of the U.S. market.
Profit and prosper with the best of Kiplinger's advice on investing, taxes, retirement, personal finance and much more. Delivered daily. Enter your email in the box and click Sign Me Up.

-
The Original Property Tax Hack: Avoiding The ‘Window Tax’Property Taxes Here’s how homeowners can challenge their home assessment and potentially reduce their property taxes — with a little lesson from history.
-
Is Mint Mobile's Home Internet a Game-Changer or Just Another Option?Mint Mobile recently unveiled its new home internet service. We break down how it works so you can determine if it's a great value for your needs.
-
Dow, S&P 500 Slip on December Rate Cut Worries, Nvidia Boosts Nasdaq: Stock Market TodayNvidia became the first company ever to boast a $5 trillion market cap, but it wasn't enough to lift the Dow and the S&P 500.
-
Stocks Hit Fresh Highs Ahead of the Fed As Earnings Pump Optimism: Stock Market TodaySHW and UNH were two of the best Dow Jones stocks Tuesday, thanks to solid earnings reports, and MSFT closed with a $4 trillion market cap.
-
US-China Trade Hopes Send Stocks to New Highs: Stock Market TodayApple and Microsoft are on track to join Nvidia in the $4 trillion market cap club.
-
Dow Adds 472 Points After September CPI: Stock Market TodayIBM and Advanced Micro Devices created tailwinds for the main indexes after scoring a major quantum-computing win.
-
Honeywell Leads Dow Higher: Stock Market TodayOil prices got a lift after the Treasury Department announced new sanctions on Russia's two largest oil companies.
-
Dow Beats 334-Point Retreat on Tech Bite: Stock Market TodayInvestors, traders and speculators wonder whether this remains a Magnificent 7 market and how long this AI-driven bull run will last.
-
What the Rich Know About Investing That You Don'tPeople like Warren Buffett become people like Warren Buffett by following basic rules and being disciplined. Here's how to accumulate real wealth.
-
3M, GM, Blue Chips Lead to the Upside: Stock Market TodayThe S&P 500 followed the Dow Jones Industrial Average into green territory, but the Nasdaq lagged the other indexes because of its tech exposure.