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Price dispersion can be viewed as a measure of trading frictions (or, tautologically, as a violation of the law of one price). It is often attributed to consumer search costs or unmeasured attributes (such as the reputation) of the retailing outlets involved. There is a difference between price dispersion and price discrimination. The latter ...
Volatility does not measure the direction of price changes, merely their dispersion. This is because when calculating standard deviation (or variance), all differences are squared, so that negative and positive differences are combined into one quantity. Two instruments with different volatilities may have the same expected return, but the ...
Market risk is the risk of losses in positions arising from movements in market variables like prices and volatility. [1] There is no unique classification as each classification may refer to different aspects of market risk. Nevertheless, the most commonly used types of market risk are:
Changes in term structure form one of the most important sources of risk in a portfolio. Unlike an equity price, which just moves one-dimensionally, the price of a fixed-income security is calculated from sum of discounted cash flows, where the discount rate used depends on the interest rate at that maturity. The magnitude and shape of curve ...
Systematic risk is therefore equated with the risk (standard deviation) of the market portfolio. Since a security will be purchased only if it improves the risk-expected return characteristics of the market portfolio, the relevant measure of the risk of a security is the risk it adds to the market portfolio, and not its risk in isolation.
Dispersion (finance), a measure for the statistical distribution of portfolio returns; Price dispersion, a variation in prices across sellers of the same item; Wage dispersion, the amount of variation in wages encountered in an economy; Dispersed knowledge, notion that any one person is unable to perceive all economic forces
The consumer price index released on January 15 — an important indicator of inflation that measures the prices average Americans pay for goods and services — showed consumer prices rising 0.2% ...
In the 1970s Eugene Fama defined an efficient financial market as "one in which prices always fully reflect available information". [3] Fama identified three levels of market efficiency: 1. Weak-form efficiency. Prices of the securities instantly and fully reflect all information of the past prices. This means future price movements cannot be ...