Companies that make up the Dow Jones Industrial Average Post Jobs Here Dow Jones Industrial Average The Dow Jones Industrial Average is a frequently quoted index of 30 of the nation's top public companies. Each company is weighted based on its market capitalization and the combined value of all 30 equals the average. The companies are chosen to give a broad reflection of corporate industry in the U.S. Below are the 30 companies that make up the average along with their stock symbol, primary business and their index weighting. Apple was added in March 2015, replacing AT&T. See stock quotes of all 30 companies . Company Stock Symbol Primary Group DJIA Monthly Close - Dow Jones Dow Jones The Dow Jones Industrial Average is DJIA Monthly Close DJIA Monthly Close - Dow Jones Dow Jones The Dow Jones... SCHOOL View Full Document Dow Jones The Dow Jones Industrial Average is an index of the stock prices for 30 large US public companies. The 30 companies that comprise the Dow change over ±me.

Informa±on about the Dow can be found at many Web sites, but a good overview appears at h²p://en.wikipedia.org/wiki/Dow_Jones_Industrial_Average Dow Jones The Dow Jones Industrial Average is an index of the stock prices for 30 large US public companies. The 30 companies that comprise the Dow change over ±me. Informa±on about the Dow can be found at many Web sites, but a good overview appears at h²p://en.wikipedia.org/wiki/Dow_Jones_Industrial_Average This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Month Closing Value Percentage Change Jan-50 201.79 Feb-50 203.44 0.82% Mar-50 206.05 1.28% Apr-50 213.56 3.64% May-50 223.42 4.62% Jun-50 209.11 -6.40% Jul-50 209.40 0.14% Aug-50 216.87 3.57% Sep-50 226.36 4.38% Oct-50 225.01 -0.60% Nov-50 227.60 1.15% Dec-50 235.42 3.44% Jan-51 248.83 5.70% Feb-51 252.05 1.29% Mar-51 248.53 -1.40

% Apr-51 259.13 4.27% May-51 249.65 -3.66% Jun-51 242.64 -2.81% Jul-51 257.86 6.27% Aug-51 270.25 4.80% Sep-51 271.16 0.34% Oct-51 262.35 -3.25% Nov-51 261.27 -0.41% Dec-51 269.23 3.05% Jan-52 270.69 0.54% Feb-52 260.08 -3.92% Mar-52 269.46 3.61% Apr-52 257.63 -4.39% May-52 262.94 2.06% Jun-52 274.26 4.31%

 Jul-52 279.56 1.93% Aug-52 275.04 -1.62% Sep-52 270.61 -1.61% Oct-52 269.23 -0.51% Nov-52 283.66 5.36% Dec-52 291.90 2.90% Jan-53 289.77 -0.73% Feb-53 284.27 -1.90% Mar-53 279.87 -1.55% Apr-53 274.75 -1.83% May-53 272.28 -0.90% Jun-53 268.26 -1.48% Jul-53 275.38 2.65% Aug-53 261.22 -5.14% Sep-53 264.04 1.08% Oct

-53 275.81 4.46% Nov-53 281.37 2.02% Dec-53 280.90 -0.17% Jan-54 292.39 4.09% Feb-54 294.54 0.74% Mar-54 303.51 3.05% Apr-54 319.33 5.21% May-54 327.49 2.56% Jun-54 333.53 1.84% Jul-54 347.92 4.31% Aug-54 335.80 -3.48% Sep-54 360.46 7.34% Oct-54 352.14 -2.31% Nov-54 386.77 9.83% Dec-54 404.39 4.56% Jan-

55 408.83 1.10% Feb-55 411.87 0.74% Mar-55 409.70 -0.53% Apr-55 425.65 3.89% May-55 424.86 -0.19% Jun-55 451.38 6.24% Jul-55 465.85 3.21% Aug-55 468.18 0.50% Sep-55 466.62 -0.33% Oct-55 454.87 -2.52% Nov-55 483.26 6.24% Dec-55 488.40 1.06% Jan-56 470.74 -3.62% Feb-56 483.65 2.74% Mar-56 511.79 5.82% Apr-5

6 516.12 0.85% May-56 478.05 -7.38% Jun-56 492.78 3.08% Jul-56 517.81 5.08% Aug-56 502.04 -3.05% Sep-56 475.25 -5.34% Oct-56 479.85 0.97% Nov-56 472.78 -1.47% Dec-56 499.47 5.65% Jan-57 479.16 -4.07% Feb-57 464.62 -3.03% Mar-57 474.81 2.19% Apr-57 494.36 4.12% May-57 504.93 2.14% Jun-57 503.29 -0.32% Jul-57

 508.52 1.04% Aug-57 484.35 -4.75% Sep-57 456.30 -5.79% Oct-57 441.04 -3.34% Nov-57 449.87 2.00% Dec-57 435.69 -3.15% Jan-58 450.02 3.29% Feb-58 439.92 -2.24% Mar-58 446.76 1.55% Apr-58 455.86 2.04% May-58 462.70 1.50% Jun-58 478.18 3.35% Jul-58 502.99 5.19% Aug-58 508.63 1.12% Sep-58 532.09 4.61% Oct-58 

543.22 2.09% Nov-58 557.46 2.62% Dec-58 583.65 4.70% Jan-59 593.96 1.77% Feb-59 603.50 1.61% Mar-59 601.71 -0.30% Apr-59 623.75 3.66% May-59 643.79 3.21% Jun-59 643.60 -0.03% Jul-59 674.88 4.86% Aug-59 664.41 -1.55% Sep-59 631.68 -4.93% Oct-59 646.60 2.36% Nov-59 659.18 1.95% Dec-59 679.36 3.06% Jan-60 6

22.62 -8.35% Feb-60 630.12 1.20% Mar-60 616.59 -2.15% Apr-60 601.70 -2.41% May-60 625.50 3.96% Jun-60 640.62 2.42% Jul-60 616.73 -3.73% Aug-60 625.99 1.50% Sep-60 580.14 -7.32% Oct-60 580.36 0.04% Nov-60 597.22 2.91% Dec-60 615.89 3.13% Jan-61 648.20 5.25% Feb-61 662.08 2.14% Mar-61 676.63 2.20% Apr-61 67

8.71 0.31% May-61 696.72 2.65% Jun-61 683.96 This preview has intentionally blurred sections.

Sign up to view the full version. C02_02 - Dow Jones Dow Jones The Dow Jones Industrial Average is an index of C02_02 C02_02 - Dow Jones Dow Jones The Dow Jones Industrial... SCHOOL View Full Document Dow Jones The Dow Jones Industrial Average is an index of the stock prices for 30 large US public companies. The 30 companies that comprise the Dow change over ±me. Informa±on about the Dow can be found at many Web sites, but a good overview appears at h²p://en.wikipedia.org/wiki/Dow_Jones_Industrial_Average Dow Jones The Dow Jones Industrial Average is an index of the stock prices for 30 large US public companies. The 30 companies that comprise the Dow change over ±me. Informa±on about the Dow can be found at many Web sites, but a good overview appears at h²p://en.wikipedia.org/wiki/Dow_Jones_Industrial_Average This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Month Closing Value Percentage Change Jan-50 201.79 Feb-50 203.44 0.82% Mar-50 206.05 1.28% Apr-50 213.56 3.64% May-50 223.42 4.62% Jun-50 209.11 -6.40% Jul-50 209.40 0.14% Aug-50 216.87 3.57% Sep-50 226.36 4.38% Oct-50 225.01 -0.60% Nov-50 227.60 1.15% Dec-50 235.42 3.44% Jan-51 248.83 5.70% Feb-51 252.05 1.29% Mar-51 248.53 -1.40

% Apr-51 259.13 4.27% May-51 249.65 -3.66% Jun-51 242.64 -2.81% Jul-51 257.86 6.27% Aug-51 270.25 4.80% Sep-51 271.16 0.34% Oct-51 262.35 -3.25% Nov-51 261.27 -0.41% Dec-51 269.23 3.05% Jan-52 270.69 0.54% Feb-52 260.08 -3.92% Mar-52 269.46 3.61% Apr-52 257.63 -4.39% May-52 262.94 2.06% Jun-52 274.26 4.31%

 Jul-52 279.56 1.93% Aug-52 275.04 -1.62% Sep-52 270.61 -1.61% Oct-52 269.23 -0.51% Nov-52 283.66 5.36% Dec-52 291.90 2.90% Jan-53 289.77 -0.73% Feb-53 284.27 -1.90% Mar-53 279.87 -1.55% Apr-53 274.75 -1.83% May-53 272.28 -0.90% Jun-53 268.26 -1.48% Jul-53 275.38 2.65% Aug-53 261.22 -5.14% Sep-53 264.04 1.08% Oct

-53 275.81 4.46% Nov-53 281.37 2.02% Dec-53 280.90 -0.17% Jan-54 292.39 4.09% Feb-54 294.54 0.74% Mar-54 303.51 3.05% Apr-54 319.33 5.21% May-54 327.49 2.56% Jun-54 333.53 1.84% Jul-54 347.92 4.31% Aug-54 335.80 -3.48% Sep-54 360.46 7.34% Oct-54 352.14 -2.31% Nov-54 386.77 9.83% Dec-54 404.39 4.56% Jan-

55 408.83 1.10% Feb-55 411.87 0.74% Mar-55 409.70 -0.53% Apr-55 425.65 3.89% May-55 424.86 -0.19% Jun-55 451.38 6.24% Jul-55 465.85 3.21% Aug-55 468.18 0.50% Sep-55 466.62 -0.33% Oct-55 454.87 -2.52% Nov-55 483.26 6.24% Dec-55 488.40 1.06% Jan-56 470.74 -3.62% Feb-56 483.65 2.74% Mar-56 511.79 5.82% Apr-5

6 516.12 0.85% May-56 478.05 -7.38% Jun-56 492.78 3.08% Jul-56 517.81 5.08% Aug-56 502.04 -3.05% Sep-56 475.25 -5.34% Oct-56 479.85 0.97% Nov-56 472.78 -1.47% Dec-56 499.47 5.65% Jan-57 479.16 -4.07% Feb-57 464.62 -3.03% Mar-57 474.81 2.19% Apr-57 494.36 4.12% May-57 504.93 2.14% Jun-57 503.29 -0.32% Jul-57

 508.52 1.04% Aug-57 484.35 -4.75% Sep-57 456.30 -5.79% Oct-57 441.04 -3.34% Nov-57 449.87 2.00% Dec-57 435.69 -3.15% Jan-58 450.02 3.29% Feb-58 439.92 -2.24% Mar-58 446.76 1.55% Apr-58 455.86 2.04% May-58 462.70 1.50% Jun-58 478.18 3.35% Jul-58 502.99 5.19% Aug-58 508.63 1.12% Sep-58 532.09 4.61% Oct-58 

543.22 2.09% Nov-58 557.46 2.62% Dec-58 583.65 4.70% Jan-59 593.96 1.77% Feb-59 603.50 1.61% Mar-59 601.71 -0.30% Apr-59 623.75 3.66% May-59 643.79 3.21% Jun-59 643.60 -0.03% Jul-59 674.88 4.86% Aug-59 664.41 -1.55% Sep-59 631.68 -4.93% Oct-59 646.60 2.36% Nov-59 659.18 1.95% Dec-59 679.36 3.06% Jan-60 6

22.62 -8.35% Feb-60 630.12 1.20% Mar-60 616.59 -2.15% Apr-60 601.70 -2.41% May-60 625.50 3.96% Jun-60 640.62 2.42% Jul-60 616.73 -3.73% Aug-60 625.99 1.50% Sep-60 580.14 -7.32% Oct-60 580.36 0.04% Nov-60 597.22 2.91% Dec-60 615.89 3.13% Jan-61 648.20 5.25% Feb-61 662.08 2.14% Mar-61 676.63 2.20% Apr-61 67

8.71 0.31% May-61 696.72 2.65% Jun-61 683.96 This preview has intentionally blurred sections.

Sign up to view the full version. Stock Market: How Does the Dow Jones Work? How Does the Dow Jones Index Work and Who Decides What's in It? written by: Tim Plaehn•edited by: John Garger•updated: 2/20/2011 How does the Dow Jones work? The Dow Jones Industrial Average is the most widely followed U.S. stock market index. The index tracks the value changes of some of America's largest companies. slide 1 of 4 History of Dow Jones Index The Dow Jones Industrial Average (DJIA) is the oldest and most widely followed stock market index . Although the Dow Jones Company has other stock market indexes, the DJIA is what everyone thinks of when referring to the Dow, Dow Jones, or Dow Jones index. The answer to how the Dow Jones works starts with the history of the index. Charles Dow invented the Dow Jones Industrial Average in 1896. He selected 12 leading industrial companies, added up the share prices of the companies and dividend by 12. From 1896 until 1928, the Dow Jones index remained a true mathematical average.

Share prices were added and divided by the number of stocks in the index. 1928 was also the year the DJIA reached its current level of 30 components when the number of stocks tracked by the Average was increased from 20 to 30. slide 2 of 4 Dow Component Stocks The Dow Jones Industrial Average is based on the share prices of 30 stocks. The companies or components of the Dow are chosen by the Dow Jones Company. Component stocks are chosen to represent the largest companies with the most actively traded stocks of American business. The Dow components no longer consist strictly of industrial companies. Service companies have become a large part of the U.S. economy. Some of the Dow Jones components include McDonald's, Intel, Johnson & Johnson, Coca Cola and American Express. See a full list of DJIA stocks . Stocks are dropped from the DJIA if the companies fall on hard financial times, get bought out, or merge into another company. A bankruptcy definitely gets a stock booted from the Dow Jones. The last changes to the Dow components where in 2009. In June of that year, Citigroup was dropped and replaced by Travelers Insurance.

On the same date, General Motors was removed from the Average and replaced by Cisco Systems. An interesting note: Travelers merged with Citibank in 1998 to form Citigroup. Then Travelers Insurance was spun off from Citigroup in 2002. slide 3 of 4 Calculating the Dow Jones Industrial Average When the components of a stock index are affected by stock substitutions, spinoffs and stock splits , the market price of the shares change but the total value of the company stock - market cap - does not change. If the calculation of an average is not adjusted for these non-economic events, the index will not provide an accurate picture of how the stock market is performing. The Dow Jones index is still calculated by adding up the share prices of all 30 stocks. But the total is not longer divided by 30. A divisor is used that accounts for the non-economic changes to the Dow stocks through the years. As of February 2011, the divisor for the Dow Jones Industrial Average is 0.132129493.

Every few seconds while the stock market is open, the Dow Jones Company adds up the share prices of the 30 component stocks, divides the total by the current divisor and reports the current level of the Dow Jones index to the investing world. This is how the Dow Jones works. slide 4 of 4 S&P Dow Jones Indices » Dow Jones Sector Indices » Overview Dow Jones Sector Indices Contact Us Overview Dow Jones Sector Indices include a wide range of broad-market and blue-chip indices, available at the country, regional and global levels. The sectors are defined by the proprietary classification system which classifies securities at four levels of specificity: 10 broad Industries, 19 Supersectors, 41 Sectors, and at the most granular level, 114 Subsectors. These segments are designed to capture the risk characteristics of a specific market by grouping together constituents that respond in similar ways to economic, political and environmental factors. More information on the proprietary classification system, including the complete sector definitions, can be found at . Broad-Market Indices Sector indices are maintained as part of our two major global index families, the Dow Jones Total Stock Market Indices and the Dow Jones Global Indices®.

Available within both families are indices for each of the 10 Industries, 19 Supersectors, 41 Sectors and 114 Subsectors defined by the proprietary classification system described at . Dow Jones Total Stock Market Indices The Dow Jones Total Stock Market Indices are comprehensive measures of the world's equity markets, aiming for near-complete market coverage (100% in the U.S., 98% globally). Sector indices are available at the global level and for all countries and regions. Dow Jones Global Indices® The Dow Jones Global Indices® are broad yet investable indices, targeting 95% market capitalization coverage. The family includes a comprehensive of series of global sector indices, as well as sector indices for each country and region. Among this array of sector indices are the Dow Jones U.S. Industry Indices, which are widely adopted measures of U.S. stocks that are classified into the proprietary classification systems' Industries. Together, these ten indices make up the Dow Jones U.S. Index, which represents approximately 95% of U.S. market capitalization. Dow Jones U.S. Basic Materials Index Dow Jones U.S. Consumer Goods Index Dow Jones U.S. Consumer Services Index Dow Jones U.S.

Financials Index Dow Jones U.S. Health Care Index Dow Jones U.S. Industrials Index Dow Jones U.S. Oil & Gas Index Dow Jones U.S. Technology Index Dow Jones U.S. Telecommunications Index Dow Jones U.S. Utilities Index Blue-Chip Indices Sector indices are available as part of our global blue-chip family, the Dow Jones Titans™ Indices. Dow Jones Sector Titans™ Indices The Dow Jones Sector Titans™ Indices are global blue-chip measures, made up of 30 stocks each. Companies are chosen for the indices based on rankings by float-adjusted market capitalization, revenue and net income. Indices are available for each of the 19 Supersectors defined by the proprietary classification system described at .

Dow Jones Automobiles & Parts Titans 30™ Index Dow Jones Banks Titans 30™ Index Dow Jones Basic Resources Titans 30™ Index Dow Jones Chemicals Titans 30™ Index Dow Jones Construction & Materials Titans 30™ Index Dow Jones Financial Services Titans 30™ Index Dow Jones Food & Beverage Titans 30™ Index Dow Jones Health Care Titans 30™ Index Dow Jones Industrial Goods & Services Titans 30™ Index Dow Jones Insurance Titans 30™ Index Dow Jones Media Titans 30™ Index Dow Jones Oil & Gas Titans 30™ Index Dow Jones Personal & Household Goods Titans 30™ Index Dow Jones Real Estate Titans 30™ Index Dow Jones Retail Titans 30™ Index Dow Jones Technology Titans 30™ Index Dow Jones Telecommunications Titans 30™ Index Dow Jones Travel & Leisure Titans 30™ Index Dow Jones Utilities Titans 30™ Index Dow Jones Emerging Markets Sector Titans™ Indices The Dow Jones Emerging Markets Sector Titans™ Indices measure the stock performance of leading emerging-market companies. Each of the indices contains 30 stocks. Companies are selected based on rankings by float-adjusted market capitalization.

Indices are available for each of the 10 proprietary classification systems' Industries, plus two Sectors. Dow Jones Emerging Markets Sector Titans Composite 100™ Index Dow Jones Emerging Markets Basic Resources Titans 30™ Index Dow Jones Emerging Markets Consumer Goods Titans 30™ Index Dow Jones Emerging Markets Consumer Services Titans 30™ Index Dow Jones Emerging Markets Financials Titans 30™ Index Dow Jones Emerging Markets Health Care Titans 30™ Index Dow Jones Emerging Markets Industrials Titans 30™ Index Dow Jones Emerging Markets Metals & Mining Titans 30™ Index Dow Jones Emerging Markets Oil & Gas Titans 30™ Index Dow Jones Emerging Markets Technology Titans 30™ Index Dow Jones Emerging Markets Telecommunications Titans 30™ Index Dow Jones Emerging Markets Utilities Titans 30™ Index Specialty Indices Dow Jones Select Sector Indices The Dow Jones U.S. Select Sector Indices measure precise, and typically narrowly-defined, sectors of the U.S. stock market. To be included in the indices, stocks must meet minimum size requirements based on market capitalization. Component weights are capped for diversification. Dow Jones U.S. Select Aerospace & Defense Index Dow Jones U.S. Select Health Care Providers Index Dow Jones U.S.

Select Home Construction Index Dow Jones U.S. Select Insurance Index Dow Jones U.S. Select Investment Services Index Dow Jones U.S. Select Medical Equipment Index Dow Jones U.S. Select Pharmaceuticals Index Dow Jones U.S. Select Oil Exploration & Production Index Dow Jones U.S. Select Oil Equipment & Service Index Dow Jones U.S. Select Regional Banks Index Dow Jones U.S. Select Telecommunications Index Dow Jones 65 Composite Average Definition | Investopedia Dow Jones 65 Composite Average DEFINITION of 'Dow Jones 65 Composite Average' A composite index that measures changes within the 65 companies that make up three Dow Jones averages: the 30 stocks that form the Dow Jones Industrial Average (DJIA), the 20 stocks that make up the Dow Jones Transportation Average (DJTA) and the 15 stocks of the Dow Jones Utility Average (DJUA). The Dow Jones 65 Composite, like the three sub-indexes, is price-weighted. BREAKING DOWN 'Dow Jones 65 Composite Average' All of the Dow Jones averages are price-weighted indexes. For this type of index, stocks with higher prices will influence the direction of the average more than lower prices, regardless of the actual size of the company.

Most broad market indexes are market-cap weighted, such as the Nasdaq-100 and Standard & Poor's 500. The combination of the Dow Jones Industrial, Transportation and Utility averages used to be a broad measure of the U.S. economy, as those sectors were once the lion's share of economic production. This is no longer the case, as industries such as healthcare, technology and finance now include some of the largest companies in the world. While the DJIA has, in recent years, included some modern companies in its "industrial" average (such as Microsoft and Intel), most of the Dow Jones 65 stocks are focused in old-line businesses, and do not appear to represent a broad measure of economic performance. Trading Center List of Stocks That Make Up the Dow 30 | Finance - Zacks List of Stocks That Make Up the Dow 30 List of Stocks That Make Up the Dow 30 The New York Stock Exchange is home to most of the Dow 30 stocks. flag image by Valeri from Fotolia.com More Articles How Can I Buy a Stock in the Dow Jones Industrial?

The Dow Jones Industrial Average, also known as the Dow 30 or just the Dow, is a stock market index of 30 large U.S. companies encompassing all industrial sectors except transportation and utilities. These companies have diversified product lines and global operations. This index is calculated and reported continuously during regular market trading sessions. The Dow sets the tone for major stock markets around the world. Consumer Companies in the consumer sector provide durable and non-durable goods and services, mainly for individuals and households. As of August 2012, consumer stocks made up about 24 percent of the Dow. The leading stocks include McDonald's, Wal-Mart, Home Depot, Procter & Gamble, Coca-Cola and Walt Disney. Industrial Industrial companies provide products and services, primarily for small and large businesses. As of August 2012, industrial stocks made up about 21 percent of the Dow Jones Industrial Average. These stocks are 3M, Caterpillar, United Technologies, Boeing and General Electric. 3M products range from the ubiquitous Post-it notes to sealants and adhesives for automobiles and airplanes. Caterpillar is the leading manufacturer of agriculture and construction equipment and specialty vehicles. United Technologies provides construction and transportation products and services.

Boeing makes airplanes, and General Electric is involved in everything from light bulbs to washing machines to television studios. Technology Technology and telecommunications companies provide data processing and communications products and services. Companies in these sectors made up about 21 percent of the Dow as of August 2012. International Business Machines makes computers and provides consulting services, Intel makes microprocessors that power desktop computers and mobile devices, and Microsoft provides software solutions for applications ranging from document processing to database management. The other Dow technology and telecommunications stocks are Hewlett-Packard, Cisco, AT&T; and Verizon Communications. Financial Financial-sector companies provide banking, investment planning and other services. This sector constituted about 10 percent of the Dow Jones as of August 2012. American Express provides credit card and insurance services, and Bank of America provides retail and investment banking services. JPMorgan Chase and Travelers are also part of the Dow 30. Other Basic materials, energy and health care are the other major industries represented in the Dow Jones Industrial Average. Alcoa is a leading manufacturer of aluminum and other materials used in cars and various industrial goods.

Chevron and ExxonMobil are large oil and gas producers, and Johnson & Johnson and Merck are leaders in lead pharmaceutical research and manufacturing. The remaining Dow stocks are UnitedHealth Group, Pfizer and DuPont. History The Dow Jones index is not set in stone; companies have been added and subtracted over the years. The Dow 30 started out as the Dow 12 in 1896, but by 2012, only General Electric from the original 12 was still a member of the Dow. Intel and Microsoft joined the Dow in November 1999 to reflect the importance of technology in the economy. UnitedHealth Group replaced food manufacturer Kraft in September 2012 because of the growing importance of health insurance. Sectors That Make Up the Dow Jones | Finance - Zacks Sectors That Make Up the Dow Jones Sectors That Make Up the Dow Jones More Articles The Major Differences Between the S&P and the Dow Jones Industrial Average "The Dow" and "the market" are often used to describe fluctuations in the prices of company stocks. Both originated with the New York Stock Exchange, which for decades was the dominant stock trading system. Today both incorporate other aspects, such as the Nasdaq automated market.

"The Dow" actually is the Dow Jones industrial average, one sector of Dow indexes that are used to indicate stock market trends. Dow Start Charles H. Dow, a co-founder of The Wall Street Journal, initiated a stock average in 1896 as a benchmark for the direction of stock prices. It originally had 12 stocks. Over the years, the industrial average was expanded to 30 stocks and two other sectors were added: transportation with 20 companies, and utilities with 15. Combined they form the Dow Jones Composite Average. Sector Divisions Today, Dow Jones sector indexes classify stocks in four levels: 10 broad industries, 19 supersectors, 41 sectors and 114 subsectors. The oil and gas industry, for instance, has a single supersector, oil and gas, with three sectors: producers, equipment and services and alternative energy. Each sector is split into two subsectors on specific fields. Worldwide Indices Now the Dow Jones Indices are a family of 830,000 indexes covering a wide range of assets around the world.

It is largely owned by McGraw-Hill, publisher of the Standard & Poor's family of investment publications and producer of the Standard & Poor's 500 index, another major indicator of market activity. The two dominant index companies merged in June of 2012. Dow Components Until 1999, the DJIA covered only NYSE issues, but that year Microsoft and Intel from the Nasdaq market were added. The average is "weighted," so it is not computed by simply adding the prices of the stocks and dividing by 30. The 30 stocks make up about 30 percent of the total market capitalization. Of the 12 stocks in the original Dow Jones industrial average, only General Electric remains a component.

Question: How many public companies comprise the Dow Jones Index?
Answer: 30