Price-Weighted Index

AAA

DEFINITION of 'Price-Weighted Index'

A stock index in which each stock influences the index in proportion to its price per share. The value of the index is generated by adding the prices of each of the stocks in the index and dividing them by the total number of stocks. Stocks with a higher price will be given more weight and, therefore, will have a greater influence over the performance of the index.

INVESTOPEDIA EXPLAINS 'Price-Weighted Index'

For example, assume that an index contains only two stocks, one priced at $1 and one priced at $10. The $10 stock is weighted nine times higher than the $1 stock. Overall, this means that this index is composed of 90% of the $10 stocks and 10% of $1 stock.

In this case, a change in the value of the $1 stock will not affect the index's value by a large amount, because it makes up such a small percentage of the index.

A popular price-weighted stock market index is the Dow Jones Industrial Average. It includes a price-weighted average of 30 actively traded blue chip stocks.

RELATED TERMS
  1. Constituent

    A single member of an index. A constituent is typically a stock ...
  2. Market Index

    An aggregate value produced by combining several stocks or other ...
  3. Weighted Average Market Capitalization

    A stock market index weighted by the market capitalization of ...
  4. Weighted Average

    An average in which each quantity to be averaged is assigned ...
  5. Dow Jones Industrial Average - ...

    The Dow Jones Industrial Average is a price-weighted average ...
  6. Standard & Poor's 500 Index - S&P ...

    An index of 500 stocks chosen for market size, liquidity and ...
RELATED FAQS
  1. How do you compare the Dow Jones Industrial Average (DJIA) and the Toronto Stock ...

    The Dow Jones Industrial Average (DJIA) is an index that tracks performance of the top 30 large companies in the United States. ... Read Full Answer >>
  2. Why is the Dow Jones Industrial Average (DJIA) price weighted?

    A price-weighted index uses the price per share for each stock included and divides the sum by a common divisor, usually ... Read Full Answer >>
  3. How is the value of the S&P 500 calculated?

    The S&P 500 is a U.S.market index that gives investors an idea of the overall movement in the U.S.equity market. The ... Read Full Answer >>
  4. What's the difference between the Dow Jones Industrial Average and the S&P 500?

    The major difference between these two indexes is that the Dow Jones Industrial Average (DJIA) includes a price-weighted ... Read Full Answer >>
Related Articles
  1. Mutual Funds & ETFs

    Introduction To Fundamentally Weighted Index Investing

    If you believe the market smiles on those who focus on value, growth or income, this vehicle may be for you.
  2. Bonds & Fixed Income

    How Now, Dow? What Moves The DJIA?

    Find out how this index tracks market movements and where it falls short.
  3. Economics

    The ABCs Of Stock Indexes

    Indexes can track market trends, but they're not always reliable. Can you trust them?
  4. Investing Basics

    Explaining Market Value of Equity

    Market value of equity is the total value of all the outstanding stock as measured in the stock market at a particular time.
  5. Investing Basics

    What is Spread?

    Spread has several slightly different meanings depending on the context. Generally, spread refers to the difference between two comparable measures.
  6. Economics

    What is the Breakeven Point?

    In general, when gains or revenue earned equals the money spent to earn the gains or revenue, you’ve hit the breakeven point.
  7. Stock Analysis

    What is the Price-to-Sales Ratio?

    The price-to-sales ratio is an indicator of the value placed on each dollar of a company’s sales or revenues.
  8. Mutual Funds & ETFs

    Which ETF is the Best Bet: VTI or IWV?

    A look at two quality ETFs that offer diversification, low expense ratios, and exposure to the total market.
  9. Options & Futures

    The Basics Of Trading S&P 500 Price Progression

    The S&P 500 index futures contract works exceptionally well as a road map for short-term market timing and direction.
  10. Investing Basics

    What is Treasury Stock?

    Treasury stock is a company’s own stock that it holds in its treasury for later use.

You May Also Like

Hot Definitions
  1. DuPont Analysis

    A method of performance measurement that was started by the DuPont Corporation in the 1920s. With this method, assets are ...
  2. Asset Class

    A group of securities that exhibit similar characteristics, behave similarly in the marketplace, and are subject to the same ...
  3. Fiat Money

    Currency that a government has declared to be legal tender, but is not backed by a physical commodity. The value of fiat ...
  4. Interest Rate Risk

    The risk that an investment's value will change due to a change in the absolute level of interest rates, in the spread between ...
  5. Income Effect

    In the context of economic theory, the income effect is the change in an individual's or economy's income and how that change ...
  6. Price-To-Sales Ratio - PSR

    A valuation ratio that compares a company’s stock price to its revenues. The price-to-sales ratio is an indicator of the ...
Trading Center