leptokurtosis

the returns distribution exhibits pronounced leptokurtosis, with sharper peaks and heavier tails than a normal distribution.

high leptokurtosis in asset returns can lead to underestimation of risk.

statistical tests are used to detect leptokurtosis in financial time series.

leptokurtosis is often associated with market crashes and extreme events.

a leptokurtosis parameter can be included in the garch model to capture fat tails.

the presence of leptokurtosis suggests that the data contain more outliers.

researchers compare the degree of leptokurtosis across different markets.

the leptokurtosis of the error term violates the normality assumption in regression.

some investors adjust their strategies to account for leptokurtosis in volatility forecasts.

simulated data often display leptokurtosis when generated from a student-t distribution.

leptokurtosis may be measured by the excess kurtosis statistic, which is positive for leptokurtic distributions.