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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 individual asset to the market risk of a portfolio when it is
To calculate beta, investors divide the covariance of an individual stock (say, Apple) with the overall market, often represented by the Standard & Poor’s 500 Index, by the variance of the ...
In financial economics, finance, and accounting, the earnings response coefficient, or ERC, is the estimated relationship between equity returns and the unexpected portion of (i.e., new information in) companies' earnings announcements.
In mathematical finance, multiple factor models are asset pricing models that can be used to estimate the discount rate for the valuation of financial assets; they may in turn be used to manage portfolio risk. They are generally extensions of the single-factor capital asset pricing model (CAPM).
In mathematical finance, the SABR model is a stochastic volatility model, which attempts to capture the volatility smile in derivatives markets. The name stands for "stochastic alpha, beta, rho", referring to the parameters of the model.
A measure of the factors influencing an investment's volatility is the beta. The beta is a measure of the risk arising from exposure to general market movements as opposed to idiosyncratic factors. A beta below 1 can indicate either an investment with lower volatility than the market, or a volatile investment whose price movements are not ...
Yahoo! Finance uses 5-year expected growth rate and a P/E based on the EPS estimate for the current fiscal year for calculating PEG (PEG for IBM is 1.26 on Aug 9, 2008 [3]). The NASDAQ web-site uses the forecast growth rate (based on the consensus of professional analysts) and forecast earnings over the next 12 months.
Beta is an important measure of one type of risk, but it doesn’t encapsulate all of a stock’s risk. Stocks are shares of real-life businesses , which subjects them to the economic fortunes of ...