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SABR Volatility

3 messages · Raghuraman Ramachandran, Jeff Ryan, Joshua Ulrich

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Short answer, no there isn't. 

You can search this list though as the topic was addressed back on 20100930 or so. 

Jeff

Jeffrey Ryan    |    Founder    |    jeffrey.ryan at lemnica.com

www.lemnica.com
On Jul 19, 2011, at 4:21 PM, Raghuraman Ramachandran <optionsraghu at gmail.com> wrote:

            
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On Tue, Jul 19, 2011 at 4:21 PM, Raghuraman Ramachandran
<optionsraghu at gmail.com> wrote:
This came up on R-help in January:
https://stat.ethz.ch/pipermail/r-help/2011-January/266946.html

I didn't check it carefully, but that implementation looks correct.
You might want to try a different optimization solver though.
Best,
--
Joshua Ulrich  |  FOSS Trading: www.fosstrading.com