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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.

Dictionary of Financial Terms. Copyright © 2008 Lightbulb Press, Inc. All Rights Reserved.


(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 ?
Previous studies have proposed certain measures to lessen the increasing burden of hospital readmissions in people with SCI. The need of ongoing patient education and programmed follow-ups of vulnerable patients has been highlighted.
In the present study, the BMSCs appeared to have neuroprotective effects and to decrease the apoptotic processes by downregulating caspase-3 and other extrinsic pathway proteins during secondary damage to SCI. The downregulation of the Fas receptor protein and caspase-3 can mediate apoptotic proteins after SCI and promote the survival of neurons and oligodendrocytes.
MS Reduces Inflammation in SCI. The content of IL-1[beta], TNF-[alpha], and IL-6 were detected at 72 h after SCI to determine the level of spinal cord inflammatory levels by ELISA (Figure 4), knowing that TNF-[alpha], IL-1[beta], and IL-6 are major indicators of inflammation.
Oral Administration of RGE Promotes Restoration from Motor and Behavioral Abnormalities in Rats at 2 Weeks after SCI. We first investigated the effects of oral administration of RGE on BBB score (Figure 2(a)), rearing activity (Figure 2(b)), and locomotion activity (Figure 2(c)) in rats.
Of the 409 patients with traumatic SCI, only 18 had any reference to TBI noted in their Active Problem list; in all these cases, the TBI had occurred at the same time as the SCI. However, electronic searching of the text of notes using the criteria described in the "Methods" section identified an additional 81 patients with traumatic SCI as having had a TBI at the same time as the SCI.
Knowing frequency of pressure ulcer will also help authorities to allocate resources for different categories of patients with SCI.
In contrast to humans, mice do not develop HO spontaneously after complete or incomplete SCI. Previous studies have shown that bone morphogenetic proteins (BMPs) can sufficiently induce HO in mice [15].
Additional features include a guest book for posting messages, a chat room for online discussions and a listing of frequently asked questions with the latest statistics on SCI.
In a literature review, Morris, Roth and Davidoff (1986) reported an average 50% concomitance rate of TBI with SCI.
This is important, as individuals with SCI are at a much higher risk for heart disease than people without SCI.
Our study results were also consistent with other studies9-11 that found the decreased serum HDL-c levels accounting for major abnormality in serum lipid profiles of patients with SCI.
Thus, studying Veterans with SCI provides an ideal setting in which to characterize the clinical profile of individuals with chronic SCI.