💹 The Dow Jones Industrial Average (DJIA)
The Dow Jones Industrial Average (DJIA) is the most important and influential stock market index in the world. The S&P 500 ranks second, followed by the Nasdaq 100.
- The 30 companies in the Dow are traded on either the New York Stock Exchange (NYSE) or the NASDAQ.
- The Dow Jones is so important that if an equity-trading strategy doesn’t work on the Dow, it likely won’t work on any other index.
- Dow Jones provides the ultimate framework for historical backtesting when trading equities.
🕰️ The Short History of Dow Jones
The Dow Jones Industrial Average tracks the price changes of 30 U.S. companies, which is why it’s often called Dow 30. It was introduced in 1896 by Charles Dow. Earlier, in 1884, Dow introduced the Dow Transportation Average, the oldest stock market index in the U.S. The Dow Jones Industrial originally measured the stock prices of industrial companies with the largest raw material reserves. Over time, its composition expanded to include companies from more industries. From 1928 to today, the Dow’s composition has changed 45 times. In 2009, General Motors and Citibank were replaced by Cisco and Travelers.
🧮 The Dow Divisor
The DJIA’s price is calculated by adding the prices of its 30 stocks and dividing by a special Dow Divisor. This divisor accounts for stock splits, reverse splits, and other structural changes.
🔗 Website: » The Dow Jones Index Page
🌐 Companies Participating in The Dow Jones Industrial
Here are the 30 companies included in the Dow 30, with direct links to their official websites, ticker symbols, original listing dates, and current weightings on the Dow Jones Industrial (last updated in 2011).
Table: The Dow-30 Companies
|
No.
|
Company Name |
Symbol |
Date Listed |
Weighting (%) |
|
1 |
IBM |
1979- |
10,10% |
|
|
2 |
CAT |
1991 |
6,38% |
|
|
3 |
CVX |
2008- |
5,95% |
|
|
4 |
MMM |
1976 |
5,66% |
|
|
5 |
UTX |
1939 (United Aircraft) |
5,25% |
|
|
6 |
XOM |
1928-(Standard Oil) |
5,11% |
|
|
7 |
MCD |
1985 |
4,70% |
|
|
8 |
BA |
1987- |
4,45% |
|
|
9 |
PG |
1932 |
3,99% |
|
|
10 |
KO |
1987-1987 |
3,92% |
|
|
11 |
JNJ |
1997- |
3,74% |
|
|
12 |
TRV |
2009 |
3,64% |
|
|
13 |
WMT |
1997- |
3,43% |
|
|
14 |
DD |
1935- |
3,37% |
|
|
15 |
HPQ |
1997- |
3,00% |
|
|
16 |
AXP |
1982 |
2,88% |
|
|
17 |
JPM |
1991- (J.P. Morgan & Co) |
2,87% |
|
|
18 |
DIS |
1991 |
2,68% |
|
|
19 |
HD |
1999- |
2,31% |
|
|
20 |
VZ |
2004- |
2,24% |
|
|
21 |
MRK |
1979- |
2,04% |
|
|
22 |
KFT |
2008 |
1,89% |
|
|
23 |
T |
1999 |
1,76% |
|
|
24 |
MSFT |
1999- |
1,68% |
|
|
25 |
GE |
1907- |
1,32% |
|
|
26 |
INTC |
1999- |
1,34% |
|
|
27 |
PFE |
2004- |
1,16% |
|
|
28 |
CSCO |
2009- |
1,15% |
|
|
29 |
AA |
1959 |
1,07% |
|
|
30 |
BAC |
2008- |
0,91% |
🕰️ Dow Jones Industrial as a Predictor of Upcoming Events
Over the years, the Dow Jones Industrial Average has proven to be a useful predictor of global political and economic events.
Here is an example. The following chart shows the Dow Jones Industrial Average before and during World War II:
1937 Point (1): Hitler gains absolute power in Germany, and the Dow Jones predicts a major war is about to start (bearish market).
1942 Point (2): Hitler begins losing the war in Russia (Operation Barbarossa), and the Dow Jones predicts the war is nearing its end (strong bullish market).
Chart: Dow Jones Industrial (1933–1946)

■ The Dow Jones Industrial Average
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