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Price-Weighted Index


A Price-Weighted Index is a type of stock market index in which each constituent stock’s price per share influences the index’s value. The higher the price of a stock, the more influence it holds over the index. It’s essentially an average of the prices of all the stocks in the index.


The phonetic pronunciation of “Price-Weighted Index” is: Prahyss – Wehy-tid Indeks

Key Takeaways

<ol><li> A Price-Weighted Index is a kind of stock market index in which each stock influences the index in proportion to its price per share. Thus, companies with higher stock prices have a greater impact on the index’s performance.</li><li> The calculation of a Price-Weighted Index is fairly straightforward. It is calculated by adding up the prices of all the stocks in the index and dividing by the total number of stocks. However, this means that a stock split can significantly impact the index, even though the intrinsic value of the company has not changed.</li><li> Some of the most well-known Price-Weighted Indexes include the Dow Jones Industrial Average (DJIA). Critics of Price-Weighted Indexes argue that they over-represent high-priced stocks and under-represent low-priced stocks. Meanwhile, supporters counter that these indexes accurately reflect the real-world influence of larger companies.</li></ol>


A Price-Weighted Index is a crucial concept in business and finance as it measures the overall value of a securities market, or a particular segment of it, based on the price of the securities included in the index. Each stock in a price-weighted index carries a value proportional to its price per share. Therefore, higher-priced stocks will have more influence on the index’s performance than lower-priced ones. This methodology provides investors a quick way to evaluate market trends and make informed decisions based on the behavior of high-value stocks. Despite criticisms about its bias towards higher-priced stocks, the price-weighted index remains an essential tool in financial analysis and market prediction.


A price-weighted index primarily serves as a valuable tool for measuring the performance of a particular sector or the overall market, hence it’s widely used in financial analysis and investing. It gauges the fluctuations in the market by accounting for the price movements of the component stocks. This widely-used method of tracking the performance of specific stocks places greater emphasis on higher-priced stocks. Therefore, its purpose is to reflect the impact of individual securities based on their price levels as opposed to their actual sizes or precise market capitalizations.In terms of its application, a price-weighted index is notably used in predicting market trends, making investment decisions, and managing portfolios. Investors and financial experts commonly refer to such indices to assess market behavior. Higher-priced stocks significantly influence this index, as a price change in a higher-priced stock can profoundly impact the overall index value, guiding investment decisions. The Dow Jones Industrial Average (DJIA), one of the most followed equity indices in the world, is a prime example of a price-weighted index. Accordingly, companies with higher stock prices have a bigger impact on the movement of the DJIA, regardless of their total market capitalization.


1. Dow Jones Industrial Average (DJIA): Perhaps the most well-known price-weighted index, the DJIA includes 30 significant stocks traded on the New York Stock Exchange (NYSE) and the Nasdaq. The index, which was first calculated in 1896, is computed using a price-weighted methodology.2. Nikkei 225: This is a price-weighted stock market index for the Tokyo Stock Exchange (TSE). It has been calculated daily by the Nihon Keizai Shimbun (The Nikkei) newspaper since 1950. The Nikkei 225 includes the top 225 companies listed in the Tokyo Stock Exchange.3. NYSE ARCA Airline Index: An example of a more specialized price-weighted index, the NYSE ARCA Airline Index includes airlines and its computation is tailored to its specific industry.

Frequently Asked Questions(FAQ)

What is a Price-Weighted Index?

A Price-Weighted Index is a type of stock market index where each constituent company’s stock makes up a portion of the total index proportional to its share price, not its total market value.

Can you give an example of a Price-Weighted Index?

One of the most well-known examples of a Price-Weighted Index is the Dow Jones Industrial Average.

How is a Price-Weighted Index calculated?

It’s calculated by adding the prices of all stocks in the index and dividing by the number of stocks. The stock with the highest price has the most influence over the index’s movements.

How does a Price-Weighted Index differ from a Market Capitalization-Weighted Index?

In a Market Capitalization-Weighted Index, companies are weighted by their total market value, not just their stock price. This means larger companies have a much larger impact on the index’s movements.

What are the pros and cons of using a Price-Weighted Index?

The main advantage of a Price-Weighted Index is its simplicity, as it’s quite easy to calculate. However, a major disadvantage is that it can be skewed by companies with high stock prices and doesn’t consider the total value of a company.

If a company splits its stock, will it affect a Price-Weighted Index?

Yes, if a company in the index splits its stock, it can decrease the stock’s price and therefore the overall index, even if the company’s total value hasn’t actually changed.

Is a Price-Weighted Index a good representation of market trends?

This largely depends on the particular market being tracked. However, because a Price-Weighted Index doesn’t consider a company’s total market value, it might not fully capture market trends.

How often is a Price-Weighted Index re-calibrated?

It varies depending on the specific rules of the index, but typically they are re-calibrated to account for stock splits, dividends, or other corporate actions affecting stock prices.

If a company’s share price rises, does it mean it will impact the Price-Weighted Index highly?

Yes, a rise in the share price of a company in a Price-Weighted Index will increase the value of the index, assuming all other prices remain constant.

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