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  2. Alpha vs. beta in investing: What’s the difference? - AOL

    www.aol.com/finance/alpha-vs-beta-investing...

    By definition, the market always has a beta of 1, so betas above 1 are considered more volatile than the market, while betas below 1 are considered less volatile. How to calculate beta

  3. How to use beta to evaluate a stock’s risk - AOL

    www.aol.com/finance/beta-evaluate-stock-risk...

    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 ...

  4. Beta (finance) - Wikipedia

    en.wikipedia.org/wiki/Beta_(finance)

    Beta can be used to indicate the contribution of an individual asset to the market risk of a portfolio when it is added in small quantity. It refers to an asset's non-diversifiable risk, systematic risk, or market risk. Beta is not a measure of idiosyncratic risk. Beta is the hedge ratio of an investment with respect to the stock market.

  5. Modern portfolio theory - Wikipedia

    en.wikipedia.org/wiki/Modern_portfolio_theory

    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.

  6. How to Find the Right Investment Opportunities by Using Beta ...

    www.aol.com/news/2013-06-10-how-to-find-the...

    The beta value of a stock is Some investors see volatile prices as an opportunity to score big gains. Others prefer sticking with the less exciting but less dangerous alternative: stable stocks ...

  7. Single-index model - Wikipedia

    en.wikipedia.org/wiki/Single-index_model

    With this equation, only the betas of the individual securities and the market variance need to be estimated to calculate covariance. Hence, the index model greatly reduces the number of calculations that would otherwise have to be made to model a large portfolio of thousands of securities.

  8. Portfolio Beta vs. Stock Beta: What's the Difference?

    www.aol.com/finance/calculate-beta-portfolio...

    Continue reading → The post How to Calculate the Beta of a Portfolio appeared first on SmartAsset Blog. ... Some prefer to play it safe and favor a low-risk investment plan while others are more ...

  9. Downside risk - Wikipedia

    en.wikipedia.org/wiki/Downside_risk

    This shows that the CAPM can be modified by incorporating downside beta, which measures downside risk, in place of regular beta to correctly reflect what people perceive as risk. [8] Since the early 1980s, when Dr. Frank Sortino developed formal definition of downside risk as a better measure of investment risk than standard deviation, downside ...