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Beta (finance) Expected change in price of a stock relative to the whole market. In finance, the beta (β or market beta or beta coefficient) is a statistic that measures the expected increase or decrease of an individual stock price in proportion to movements of the stock market as a whole. Beta can be used to indicate the contribution of an ...
Beta helps investors understand the systematic risk of a stock and its potential reaction to market changes. If the beta score exceeds 1, it implies a higher level of volatility, whereas a beta ...
β, Beta, is the measure of asset sensitivity to a movement in the overall market; Beta is usually found via regression on historical data. Betas exceeding one signify more than average "riskiness" in the sense of the asset's contribution to overall portfolio risk; betas below one indicate a lower than average risk contribution.
Due to the idiosyncratic nature of unsystematic risk, it can be reduced or eliminated through diversification; but since all market actors are vulnerable to systematic risk, it cannot be limited through diversification (but it may be insurable). As a result, assets whose returns are negatively correlated with broader market returns command ...
Idiosyncratic risk is sometimes referred to as “unsystematic risk” because it affects a subset of stocks rather than most or all stocks. Investors broadly face two types of risks: systematic ...
Capital asset pricing model. An estimation of the CAPM and the security market line (purple) for the Dow Jones Industrial Average over 3 years for monthly data. In finance, the capital asset pricing model (CAPM) is a model used to determine a theoretically appropriate required rate of return of an asset, to make decisions about adding assets to ...
The Brownian motion models for financial markets are based on the work of Robert C. Merton and Paul A. Samuelson, as extensions to the one-period market models of Harold Markowitz and William F. Sharpe, and are concerned with defining the concepts of financial assets and markets, portfolios, gains and wealth in terms of continuous-time stochastic processes.
A trio of peculiar picks. 'Contagion': This market expert warns that America's real estate problem may not be limited to commercial properties — here are 3 'idiosyncratic' stocks he likes