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by | Dec 22, 2013 | Publications. VIX is a measure of expected volatility calculated as 100 times the square root of the expected 30-day variance (var) of the S&P 500 rate of return. The variance is annualized and VIX expresses volatility in percentage points.
The formula for calculating dividend yield may be represented as follows: Yields for a current year are often estimated using the previous yearâs dividend yield or by taking the latest quarterly yield, multiplying by 4 (adjusting for seasonality) and dividing by the current share price.