Hi team,
I am facing issues with PearsonIV distribution fitting in R.
I am applying Hyperbolic and PearsonIV distributions on the equity returns in UK over a period of 30 years.
For the same data set i am getting strikingly different results under which Hyperbolic distribution does produce negative percentiles of the return after fitting but PearsonIV distribution does not.
I think there is an issue with PearsonIV distribution in R; also there are no plots available for PearsonIV distribution.
Can you help? I am ready to share my code.

Gaurang Mehta
Risk Calibration | Group Economic Capital | Aviva Group
Email: gaurang.jitendrabhai@aviva.com
14th Floor, St Helen's
1 Undershaft
London, EC3P 3DQ


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