A stock's historical variance measures the difference between the stock's returns for different periods and its average return. A stock with a lower variance typically generates returns that are ...

Volatility is the core measure of financial risk, but not all volatility calculations are created equal. Simple historical variance treats all past returns the same, which can make it slow to reflect ...

The following article will show you, step-by-step, how to calculate the historical variance of stock returns with a detailed example.