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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.
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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.
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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.
Wall Street Words: An A to Z Guide to Investment Terms for Today's Investor by David L. Scott. Copyright © 2003 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved. All rights reserved.


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.

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(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

The Complete Real Estate Encyclopedia by Denise L. Evans, JD & O. William Evans, JD. Copyright © 2007 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Pearson correlation coefficient (r) Storage Color index Packaging temperature Lycopene HMF [L.sup.*] P1 37[degrees]C 0.963 ** -0.934 * 25[degrees]C 0.976 ** -0.881 * P2 37[degrees]C 0.967 ** -0.967 ** 25[degrees]C 0.995 ** -0.926 * [a.sup.*] P1 37[degrees]C 0.992 ** -0.916 * 25[degrees]C 0.962 ** -0.951 * P2 37[degrees]C 0.994 ** -0.931 * 25[degrees]C 0.981 ** -0.942 * [a.sup.*]/[b.sup.*] P1 37[degrees]C 0.929 * -0.988 ** 25[degrees]C 0.943 * -0.974 ** P2 37[degrees]C 0.958 * -0.975 ** 25[degrees]C 0.974 ** -0.966 ** Note.
Therefore, using sorption and ion exchange, we extracted and produced enzyme with high purification degree in terms of color index, 99%; with specific activity of 525.0 units/mg protein; and with high yield of enzymes in terms of pectinase activity, 10.8 units/ml, and polygalacturonase activity, 6.8 units/ml.
The proposed procedure for recovering areas incorrectly classified as nonvegetation, after the application of the Bayesian classification and the inclusion of a second SOM training into the methodology, demonstrated its capacity to achieve a better segmentation rate than the performance yielded by the color index methods CIVE and ExG-ExR.
From this, the following relative color index (RCI) is proposed to estimate relative propensity of different treatments (e.g., varieties or N rates) to produce color in raw sugar:
Hold margins by special offerings Product appearance raises consumer's expectations * Premium style offerings (wellness, etc.) * Tailor-made solutions/segmentation Innovations and value-adding benefits Table 2: Color Index Numbers Are Related to Chromophores Chromophore CI Number Azo (CI 11XXX-35XXX) Triarylmethane (CI 42XXX-44XXX) Xanthene (CI 45XXX) Quinoline (CI 47XXX) Anthraquinone (CI 58XXX-72XXX) Indigoid (CI 73XXX) Phthalocyanine (CI 74XXX) Inorganic (CI 77XXX)
* Polysynthren Yellow NG is a mid-shade yellow (color index P.Y.
The color index, also at the end of the book, is helpful if you want to use a specific-colored item but do not know its name.
The B-V color index for 1993 was 0.99[+ or -]0.04 which is a little lower than previous measurements (Nautical Almanac 1992; Harris 1961); this discrepancy may be due to the changing tilt of Saturn's rings.
Says Malin: "Astronomers might say the spiral arms of this galaxy have a color index of near zero, meaning they are blue.
This reduction of the search space should be reflected in the total time required to answer query Q9 (time to generate the color index is not included in Q9).