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An exchange-traded fund (ETF) is a basket of securities that tracks or seeks to outperform an underlying index. ETFs can contain investments such as stocks and bonds.| Investopedia
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Standard deviation is a statistic measuring the dispersion of a dataset relative to its mean. It is calculated as the square root of the variance. Learn how it's used.| Investopedia
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The Sharpe ratio is used to help investors understand the return of an investment compared to its risk.| Investopedia
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The capital asset pricing model (CAPM) helps to calculate investment risk and what return on investment an investor should expect.| Investopedia