DEFINITION of 'Platykurtosis '
A statistical measure that indicates the level of peakedness of a probability distribution. Specifically, platykurtosis describes a distribution that has a negative excess kurtosis and appears flatter than a normal distribution, which has a kurtosis value of three.
Next Up
BREAKING DOWN 'Platykurtosis '
The opposite of platykurtosis is leptokurtosis, which describes a distrbution that is more peaked than a normal distribution. Also, a platykurtic distrbution has thinner tails while a leptokurtic distribution has fatter tails. Fatter tails equates to more data points at the two ends of the distribution, while a thin tail indicates there are more data points centred around the mean.
RELATED TERMS

Mesokurtic
A term used in a statistical context where the kurtosis of a ... 
Leptokurtic
A statistical distribution where the points along the Xaxis ... 
Excess Kurtosis
A statistical term describing that a probability, or return distribution, ... 
Tail Risk
A form of portfolio risk that arises when the possibility that ... 
Probability Distribution
A statistical function that describes all the possible values ... 
Long Tail
In business, long tail is a phrase coined by Chris Anderson, ...
Related Articles

Term
What a Normal Distribution Means
Normal distribution describes a symmetrical data distribution, where most of the results lie near the mean. 
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. 
Fundamental Analysis
Find The Right Fit With Probability Distributions
Discover a few of the most popular probability distributions and how to calculate them. 
Fundamental Analysis
Lognormal and Normal Distribution
When and why do you use lognormal distribution or normal distribution for analyzing securities? Lognormal for stocks, normal for portfolio returns. 
Term
What's Skewness?
Skewness describes how a data distribution leans. 
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. 
Markets
Fat Tail Risk Makes Global Warming Scarier
The cost of global warming does not take into account climate changerelated catastrophes. Here's where fattail distributions come in. 
Investing Basics
Using Normal Distribution Formula To Optimize Your Portfolio
Normal or bell curve distribution can be used in portfolio theory to help portfolio managers maximize return and minimize risk. 
Financial Advisors
How to Navigate Taxable Mutual Fund Distributions
It's almost time for yearend capital gains distributions for mutual funds. Here's how to monitor them and minimize their tax impact.
RELATED FAQS

How does a long tail become profitable?
Understand what the long tail concept is and who pioneered it. Learn how a company using a long tail strategy becomes profitable. Read Answer >> 
What does Value at Risk (VaR) say about the "tail" of the loss distribution?
Learn about value at risk and conditional value at risk and how both models interpret the tail ends of an investment portfolio's ... Read Answer >> 
Is my nonqualified Roth IRA distribution subject to taxes or early distribution ...
The ordering rules must be applied to determine whether the distribution is subject to income taxes and/or the early distribution ... Read Answer >> 
Can I elect to NOT have income tax withheld from an IRA (NOT ROTH) distribution before ...
... Read Answer >> 
What are the exceptions to the early distribution penalty for a nonqualified Roth ...
The exceptions are as follows: The distribution is made on or after the date you reach age 59.5 The distribution is made ... Read Answer >> 
What are the advantages of having fewer distribution channels?
Understand what a distribution channel is and how companies leverage them to sell products. Learn about the advantages of ... Read Answer >>