Leptokurtic Distribution
A leptokurtic distribution is a statistical distribution that exhibits a sharper peak and fatter tails than a normal distribution. This means that while most observations are clustered tightly around the mean, the probability of observing values in the tails is significantly higher than in a Gaussian model.
In the financial world, this is the standard for describing the returns of volatile assets like Bitcoin or leveraged derivatives. Because these distributions have higher kurtosis, they indicate that extreme market moves are not just possible but statistically expected.
Ignoring this leptokurtosis leads to the underpricing of options and the underestimation of risk. Financial models must explicitly incorporate this feature to remain accurate in high-volatility environments.
It is a defining characteristic of real-world financial data.