Serving the Quantitative Finance Community

 
User avatar
stonexu1984
Topic Author
Posts: 0
Joined: March 18th, 2007, 6:20 am

it is kurt or excessive kurt used in CF VaR?

June 8th, 2010, 12:54 pm

The "K" in CF Var is kurtosis or excessive kurtosis? any official literal?
Last edited by stonexu1984 on June 7th, 2010, 10:00 pm, edited 1 time in total.
 
User avatar
Hansi
Posts: 41
Joined: January 25th, 2010, 11:47 am

it is kurt or excessive kurt used in CF VaR?

June 8th, 2010, 7:17 pm

IIRC K is the kurtosis of the returns time series.
 
User avatar
Hansi
Posts: 41
Joined: January 25th, 2010, 11:47 am

it is kurt or excessive kurt used in CF VaR?

June 8th, 2010, 9:14 pm

Just checked the old paper by Cornish and Fisher and their approximation is explicitly for the moments so it must be the kurtosis itself:http://digital.library.adelaide.edu.au/ ... er/148.pdf
 
User avatar
purbani
Posts: 10
Joined: July 14th, 2002, 3:00 am

it is kurt or excessive kurt used in CF VaR?

June 9th, 2010, 3:53 am

Last edited by purbani on June 9th, 2010, 10:00 pm, edited 1 time in total.
 
User avatar
frenchX
Posts: 11
Joined: March 29th, 2010, 6:54 pm

it is kurt or excessive kurt used in CF VaR?

June 9th, 2010, 4:58 am

I have a question:Is it safe to use Kurtosis since there is no unbiased (to my knowledge, I should search in litterature) estimator of its value ? Moreover since it's a high order moment it is very sensitive to the extreme tailed value.
 
User avatar
stonexu1984
Topic Author
Posts: 0
Joined: March 18th, 2007, 6:20 am

it is kurt or excessive kurt used in CF VaR?

June 9th, 2010, 12:17 pm

the link is not working...
 
User avatar
stonexu1984
Topic Author
Posts: 0
Joined: March 18th, 2007, 6:20 am

it is kurt or excessive kurt used in CF VaR?

June 9th, 2010, 12:22 pm

but if you plug s=0 and k = 0 in the formula it gives you the exact number of N(confidence), which indicates it should be excessive k in the formula
 
User avatar
purbani
Posts: 10
Joined: July 14th, 2002, 3:00 am

it is kurt or excessive kurt used in CF VaR?

June 9th, 2010, 11:32 pm

See attached
Attachments
Four Moment Risk Decomposition.zip
(602.04 KiB) Downloaded 88 times
Last edited by purbani on June 9th, 2010, 10:00 pm, edited 1 time in total.