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Statistical composite that measures changes in the economy or in financial markets, often expressed in percentage changes from a base year or from the previous month. Indexes measure the ups and downs of stock, bond, and some commodities markets, in terms of market prices and weighting of companies in the index.


A statistical measure of the value of a certain portfolio of securities. The portfolio may be for a certain class of security, a certain industry, or may include the most important securities in a given market, among other options. The value of an index increases when the aggregate value of the underlying securities increases, and decreases when the aggregate value decreases. An index may track stocks, bonds, mutual funds, and any other security or investment vehicle, including other indices. An index's value may be weighted; for example, securities with higher prices or greater market capitalization may affect the index's value more than others. One of the most prominent examples of an index is the Dow Jones Industrial Average, which is weighted for price and tracks 30 stocks important in American markets.


The relative value of a variable in comparison with itself on a different date. Many security price indicators such as the Standard & Poor's series and the New York Stock Exchange series are constructed as indexes. Also called stock index. See also base period.


To adjust a variable by a selected measure of relative value. For example, it has been proposed that an investor's basis on a security be indexed for changes in consumer prices so that only real increases in value will be taxed. Also called tax indexing. See also subindex.


An index reports changes up or down, usually expressed as points and as a percentage, in a specific financial market, in a number of related markets, or in an economy as a whole.

Each index -- and there are a large number of them -- measures the market or economy it tracks from a specific starting point. That point might be as recent as the previous day or many years in the past.

For those reasons, indexes are often used as performance benchmarks against which to measure the return of investments that resemble those tracked by the index.

A market index may be calculated arithmetically or geometrically. That's one reason two indexes tracking similar markets may report different results. Further, some indexes are weighted and others are not.

Weighting means giving more significance to some elements in the index than to others. For example, a market capitalization weighted index is more influenced by price changes in the stock of its largest companies than by price changes in the stock of its smaller companies.


(1) A statistical indicator that measures changes in the economy in general or in particular areas.An example is the cost-of-living index.(2) A reference point against which measurements are taken for purposes of making future adjustments.An adjustable-rate mortgage might begin with an interest rate of 6 percent and provide that it will increase or decrease in a like percentage as the increase or decrease between today's quoted price for 10-year U.S.Treasury bonds and the price on the loan's annual anniversary date.We would say that 10-year T-bonds are the index.

Some leading loan indices include

• Wall Street Journal prime
• Federal discount rate
• Fed funds rate
• 11th District Cost of Funds
• 10-year Treasuries
• One-year LIBOR

References in periodicals archive ?
Abaixo se apresentam os resultados para o estudo de associacao de idade, evento de quedas e escores obtidos no DGI dos 60 voluntarios avaliados, indicando que o desempenho no teste esteve associado com idade e eventos de quedas com p=0,012 * e 0,006 * respectivamente.
Patients living in boarding with care or assisted living settings were least likely to receive a gait evaluation using the DGI or POMA.
Si la tarea prioritaria de la DGI era la reunion de informacion, esta deberia articularse con la realizacion de tareas de inteligencia, tal como se especificaba en la normativa de 1969: "reunir, en el ambito provincial, la informacion en forma permanente o a requerimiento especial del senor Gobernador, analizando y evaluando esta informacion a efectos de realizar la tarea de inteligencia, que permita proporcionar un preciso cuadro de la situacion y elevar las conclusiones a las instancias que se le ordenen" (17).
Cordova began the first investigation of DGI and found the CGR report had ignored evidence of criminal acts.
A DGI system does not employ a separate gas cylinder, piston or operating rod assembly.
25 October 2013 - Gregory Mark Shepard, a shareholder in US property and casualty insurer Donegal Group Inc (NASDAQ:DGICA), or DGI, wanting to increase his stake, has slammed the company and CEO Don Nikolaus over the rejection of his proposal for an amicable share purchaseA transaction.
Richards Barry Joyce & Partners represented Brookwood with respect to the leasing, while Potpourri and DGI were represented by Neil Ross and Greg Zais of Jones Lang LaSalle and Sam Oddo of Oddo, Inc.
The bid, which represents a 42% premium to the closing price of DGI Class B shares on 19 March, is conditional upon the tender of at least 925,000 Class B shares, insurance and bank regulatory approvals, as well as the expiration or early termination of the Hart-Scott-Rodino waiting period.
Selon la DGI, a partir du 1er janvier 2013, un nouveau bareme sera applique en matiere de Taxe Speciale Annuelle sur les Vehicules Automobiles -TSAVA-.
According to the FBI affidavit used in her arrest, she was also working secretly for Fidel Castro's DGI since at least 1996.
The new DGI organization will provide Advisory Services to business and government clients in order to be the preeminent National Security Advisory Organization.