---------------------- Forwarded by Vince J Kaminski/HOU/ECT on 08/18/2000 
08:18 AM ---------------------------


Darrell Duffie <duffie@Stanford.EDU> on 08/17/2000 07:37:51 PM
Please respond to Darrell Duffie <duffie@Stanford.EDU>
To: Vince.J.Kaminski@enron.com
cc:  
Subject: Re: Full version




I read the chapter. Generally,
I like it, and find it non-controversial
and well written. Of course, this is
a huge topic and there are things
that you haven't discussed.

I thought the amount of attention
paid to OLS and MLE estimation
was a bit overboard, given that you
didn't really exploit it in your
results. If you were to state
the likelihood function for
the GARCH model, it might justify
the amount of attention to
gave to estimation for
simple iid processes, which could then
be thought of as a simple lead-in
and intuition builder to
the more interesting models that
you do actually use.

By the way, in your discussion of
smiles, you discuss fat tails
extensively. At least for equity markets,
while fat tails contribute, they don't do very
much at all compared to the effect
of risk premia, which you allude to briefly,
using supply-demand language, at the
end of that section.

For the impact of risk premia, see
Jun Pan's paper, which is available
from her web page. But she covers
only SP500, (as do most studies),
and your markets are obviously much different.

The chapter will be a good service to your readers!

Best, Darrell



> X-Lotus-FromDomain: ECT
> From: "Vince J Kaminski" <Vince.J.Kaminski@enron.com>
> To: Darrell Duffie <duffie@Stanford.EDU>
> cc: "Grant Masson" <Grant.Masson@enron.com>, "Vince J Kaminski"
<Vince.J.Kaminski@enron.com>
> Date: Wed, 16 Aug 2000 16:37:53 -0500
> Subject: Re: Full version
> Mime-Version: 1.0
> Content-Disposition: inline
> X-UIDL: 00453eda98c82d709e6123af537e4f63
> X-Keywords:
>
>
>
> Darrell,
>
> Thanks a lot. I really appreciate it. The text is below our usual
> standards but we are completely swamped with work here.
>
> Vince
>
>
>
>
>
>
>
> Darrell Duffie <duffie@Stanford.EDU> on 08/15/2000 04:54:23 PM
>
> Please respond to Darrell Duffie <duffie@Stanford.EDU>
>
> To:   Vince.J.Kaminski@enron.com
> cc:
> Subject:  Re: Full version
>
>
> I'll have a look!
>
> I haven't much time, but can certainly
> get you a quick reaction, at least!
>
> Best, Darrell
>
>
> > X-Lotus-FromDomain: ECT
> > From: "Vince J Kaminski" <Vince.J.Kaminski@enron.com>
> > To: duffie@Stanford.EDU
> > Date: Thu, 10 Aug 2000 14:04:47 -0500
> > Subject: Full version
> > Mime-Version: 1.0
> > Content-Disposition: inline
> > X-UIDL: 9fef7462afa5d4ee6c04c9c02df71b25
> > X-Keywords:
> >
> >
> >
> > Darrell,
> >
> > Grant just alerted me that I sent you only  part of the text.
> >
> > Here is the full chapter with an aged version of Gran't part.
> > What I sent you represents an update of his contribution.
> >
> > Sorry for that.
> >
> > Vince
> >
> >  (See attached file: vol0720.DOC)
>
> _____________________________________________
> Darrell Duffie
> mail  GSB Stanford CA 94305-5015 USA
> phone 650 723 1976
> fax   650 725 7979
> email duffie@stanford.edu
> web   http://www.stanford.edu/~duffie/
> _____________________________________________
>
>
>
>
>
>
>

_____________________________________________
Darrell Duffie
mail  GSB Stanford CA 94305-5015 USA
phone 650 723 1976
fax   650 725 7979
email duffie@stanford.edu
web   http://www.stanford.edu/~duffie/
_____________________________________________