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These 3 Musketeers Are Driving the Dow Higher Today

By Anders Bylund – Feb 20, 2014 at 2:00PM

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It's easy to credit Verizon's 3.3% jump for boosting the Dow today, but this is no one-stock show. ExxonMobil and Chevron are pulling their weight too!

Verizon Communications (VZ -0.49%) is taking the Dow Jones Industrial Average (^DJI -1.03%) higher today. The wireless provider scored an analyst upgrade with a $55 price target today, boosting its share price by 3.3%. That's worth 10 Dow points if you're keeping index scores at home.

Verizon is the Dow's largest individual gainer by far today -- but did you know that two other Dow stocks added more points to the blue-chip index despite notching smaller overnight gains?

ExxonMobil (XOM -2.78%) and Chevron (CVX -2.58%) added 11 points each thanks to a pair of 1.7% price increases. 3M (MMM -0.04%) also came close to Verizon, leveraging a 0.9% price gain into eight fresh Dow points.

It all comes down to the Dow's price-weighted nature. Let's say you wanted to build a portfolio that copies the Dow as closely as possible. You wouldn't invest equal dollar amounts in each of the 30 Dow stocks, and you wouldn't weight the portfolio according to market caps, either -- for that, the cap-weighted S&P 500 would be more appropriate.

Instead, your Dow clone would have to buy an equal amount of shares of each stock from the index. That way, you'd mimic the average's price weighting by investing more money in high-priced stocks and less in stocks with lower share prices.

Today, you could build a portfolio like this for $2,515 (plus commissions for 30 trades). Building a total portfolio value that mirrors the current Dow score of 16,150 would require an awkward 6.42 shares per ticker.

And that's why Verizon's large jump was about as important to the Dow as the much smaller moves in Exxon, Chevron, and 3M. Here's how their weightings work out, with largest Dow component Visa (V -2.15%) thrown in for a sense of scale:

Data from T he Wall Street Journal 's Dow tracker..

As you can see, Exxon and Chevron wield about twice the heft of Verizon thanks to their double-up share prices. 3M runs even further ahead, which is why a bit of random market noise can move 3M's Dow needle as far as a prestigious upgrade for Verizon. And Visa matters five times as much to the Dow's overall health as Verizon does.

If the Dow were reweighted along the market cap lines of the S&P 500, the picture above would look more like this:

Data from T he Wall Street Journal 's Dow tracker.

In this alternate universe, Verizon would outrank 3M, while Visa would fall far below Exxon and basically tie Chevron. And again, neither one of these approaches gives equal credence to each and every member stock. That's how most of us build our own stock portfolios, but not how the big market indexes work.

Anders Bylund has no position in any stocks mentioned. The Motley Fool recommends 3M, Chevron, and Visa. The Motley Fool owns shares of Visa.

We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.

Stocks Mentioned

Dow Jones Industrial Average (Price Return) Stock Quote
Dow Jones Industrial Average (Price Return)
^DJI
$33,596.34 (-1.03%) $-350.76
Exxon Mobil Stock Quote
Exxon Mobil
XOM
$103.88 (-2.78%) $-2.97
Chevron Stock Quote
Chevron
CVX
$172.01 (-2.58%) $-4.55
3m Stock Quote
3m
MMM
$124.58 (-0.04%) $0.05
Verizon Communications Stock Quote
Verizon Communications
VZ
$36.89 (-0.49%) $0.18
Visa Stock Quote
Visa
V
$209.08 (-2.15%) $-4.60

*Average returns of all recommendations since inception. Cost basis and return based on previous market day close.

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