In investing, it can be used to measure the volatility of an investment or investment portfolio. Standard deviation is equal to the square root of a data set's variance. It measures how spread out ...

In finance, standard deviation is key to helping businesses and investors quantify risk and, therefore, the return they would require from an investment to make it worthwhile. In modern portfolio ...

The frontier consists of portfolios that no other portfolio with the same standard deviation (i.e., amount of risk) can be expected to outperform. Cost basis is the original value of an asset ...

Calculate this by dividing the value of each position by the total portfolio value. Let's label these values W1 and W2. The standard deviation of Stock 1 and Stock 2. You can calculate these ...

For example, one could calculate the realized volatility for the equity market in March of 2003 by taking the standard deviation of the daily returns within that month. One could look at the ...