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Infinite Density at the Median and the Typical Shape of Stock Return Distributions

  • Chirok Han


    (Korea University)

  • Jin Seo Cho


    (Korea University)

  • Peter C. B. Phillips

    (Yale University, University of York, University of Auckland & Singapore Management University)

Statistics are developed to test for the presence of an asymptotic discontinuity (or infinite density or peakedness) in a probability density at the median. The approach makes use of work by Knight (1998) on L1 estimation asymptotics in conjunction with non-parametric kernel density estimation methods. The size and power of the tests are assessed, and conditions under which the tests have good performance are explored in simulations. The new methods are applied to stock returns of leading companies across major U.S. industry groups. The results confirm the presence of infinite density at the median as a new significant empirical evidence for stock return distributions.

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Paper provided by Institute of Economic Research, Korea University in its series Discussion Paper Series with number 0914.

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Length: 32 pages
Date of creation: 2009
Date of revision:
Handle: RePEc:iek:wpaper:0914
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