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The NASDAQ spiked during the dot-com bubble in the late 1990s, a result of the large number of technology companies on that index. In finance, a stock index, or stock market index, is an index that measures the performance of a stock market, or of a subset of a stock market. It helps investors compare current stock price levels with past prices ...
Index (statistics) In statistics and research design, an index is a composite statistic – a measure of changes in a representative group of individual data points, or in other words, a compound measure that aggregates multiple indicators. [1][2] Indices – also known as indexes and composite indicators – summarize and rank specific ...
Price index. A price index (plural: "price indices" or "price indexes") is a normalized average (typically a weighted average) of price relatives for a given class of goods or services in a given region, during a given interval of time. It is a statistic designed to help to compare how these price relatives, taken as a whole, differ between ...
Index (economics) In statistics, economics, and finance, an index is a statistical measure of change in a representative group of individual data points. These data may be derived from any number of sources, including company performance, prices, productivity, and employment. Economic indices track economic health from different perspectives.
Investopedia is a global financial media website headquartered in New York City. Founded in 1999, Investopedia provides investment dictionaries, advice, reviews, ratings, and comparisons of financial products, such as securities accounts. It is part of the Dotdash Meredith family of brands owned by IAC. [1][2]
Contents. Market data. For use in marketing, see marketing information system. In finance, market data is price and other related data for a financial instrument reported by a trading venue such as a stock exchange. Market data allows traders and investors to know the latest price and see historical trends for instruments such as equities ...
Composite (finance) A composite[1] or a composite index[2] is a combination of equities or indexes intended to measure the overall market performance over time. A composite index may also be used in the natural or social sciences to summarize complex or multidimensional data or redundant measures. An example of a composite index in the social ...
The United States Consumer Price Index (CPI) is a family of various consumer price indices published monthly by the United States Bureau of Labor Statistics (BLS). The most commonly used indices are the CPI-U and the CPI-W, though many alternative versions exist for different uses. For example, the CPI-U is the most popularly cited measure of ...