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Stock amount invested security beta and the beta of a portfolio comprised of the following securities is 1.27.
How is invested security beta calculated?
The portfolio beta is a weighted average of the individual betas of the composite stocks.
Total amount invested = 4,000 + 5,000 + 7,500
= $16,500
Portfolio beta = (4,000/16,500 * 1.44) + (5,000/16,500 * 1.55) + (7,500/16,500 * 1.00)
= 0.3490909 + 0.469697 + 0.45454545
= 1.27333335
= 1.27
In terms of investments, what is a security's beta?
Beta () measures a security or portfolio's volatility, or systematic risk, in relation to the market as a whole (usually the S&P 500). Generally speaking, stocks with betas greater than 1.0 are thought to be more volatile than the S&P 500.
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