DEFINITION of 'Excess Kurtosis'
A statistical term describing that a probability, or return distribution, has a kurtosis coefficient that is larger then the coefficient associated with a normal distribution, which is around 3. This will signal that the probability of obtaining an extreme value in the future is higher than a lower level of kurtosis.
Kurtosis is a measure of the likelihood that an event occurring is extreme in relation to a given distribution.
BREAKING DOWN 'Excess Kurtosis'
Excess kurtosis is an important consideration to take when examining historical returns from a stock or portfolio, for example. The higher the kurtosis coefficient is above the "normal level", the more likely that future returns will be either extremely large or extremely small.
Kurtosis is often referred to the "volatility of volatility".

Mesokurtic
A term used in a statistical context where the kurtosis of a ... 
Kurtosis
A statistical measure used to describe the distribution of observed ... 
Platykurtosis
A statistical measure that indicates the level of peakedness ... 
Probability Distribution
A statistical function that describes all the possible values ... 
Leptokurtic
A statistical distribution where the points along the Xaxis ... 
Correlation Coefficient
A measure that determines the degree to which two variable's ...

Professionals
Skew And Kurtosis
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Term
What a Normal Distribution Means
Normal distribution describes a symmetrical data distribution, where most of the results lie near the mean. 
Fundamental Analysis
Calculating the Coefficient Of Variation (CV)
Coefficient of variation measures the dispersion of data points around the mean, a statistical average. 
Active Trading
What's the Correlation Coefficient?
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Professionals
Common Probability Distribution Properties
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Professionals
Distribution of Returns
Distribution of Returns 
Fundamental Analysis
Quantitative Analysis Of Hedge Funds
Hedge fund analysis requires more than just the metrics used to analyze mutual funds. 
Investing
What is Descriptive Statistics?
Descriptive statistics is the term applied to meaningful data analysis. 
Forex Education
Trading With Gaussian Models Of Statistics
The entire study of statistics originated from Gauss and allowed us to understand markets, prices and probabilities, among other applications. 
Economics
Understanding Statistics
Statistics provide the means to analyze data and then summarize it into a numerical form.

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