Serving the Quantitative Finance Community

Search found 93 matches

  • 1
  • 2
  • 3
  • 4
  • 5
  • 7
by Steno
September 18th, 2003, 7:30 am
Forum: Technical Forum
Topic: dual methods for american options
Replies: 6
Views: 190863

dual methods for american options

<t>The terms 'dual' and 'duality' are used in many contexts with different meanings. In this case, I believe 'duality' is to be understood in the context of optimization. Pricing of American or Bermudan options can be restated as an optimal stopping problem, i.e. finding an exercise strategy that ma...
by Steno
September 8th, 2003, 5:41 am
Forum: General Forum
Topic: Which models are used for market risk management in big Banks?
Replies: 5
Views: 191160

Which models are used for market risk management in big Banks?

<t>For exotics, the main points in a "perfect" yield curve model are:1. Multi-factor dynamics2. Volatility smile modeliing for vanillas3. Correct autocorrelation structure4. Arbitrage-free dynamics5. Consistency with models for vanillasThis must be balanced againsta. Quick and accurate calibrationb....
by Steno
August 29th, 2003, 8:52 am
Forum: General Forum
Topic: Convexity adjustment
Replies: 13
Views: 194631

Convexity adjustment

<t>QuoteOriginally posted by: NikeI use ATM swaption vols and I assume that for pricing CMS swap with no optionalities (simple swap: receiving 30year CMS and paying Euribor+spread for 15 years) this shouldn't be too wrong, since for 5 year CMS observed within 10 years the adjustment works pretty wel...
by Steno
August 29th, 2003, 6:15 am
Forum: General Forum
Topic: Convexity adjustment
Replies: 13
Views: 194631

Convexity adjustment

<t>An obvious difficulty in using convexity adjustment formulas for CMS products is how to incorporate volatility smile (i.e. which volatility is to be used. ATM volatility ? Some smile-adjusted volatility ?). CMS caplets (floorlets) can replicated by a string of cash settled swaptions with the same...
by Steno
August 22nd, 2003, 5:43 am
Forum: Numerical Methods Forum
Topic: integrals over multivariate dist.
Replies: 11
Views: 191160

integrals over multivariate dist.

<t>The problem has also been studied in the context of optimization subject to chance constraints. Such problems lead to calculation of multivariate integrals over regions specified by linear-affine constraints. Such problems are notoriously intractable. A couple of hungarian scientist have tried to...
by Steno
August 20th, 2003, 6:05 am
Forum: Off Topic
Topic: Think Positive! (Simple Math Inequality)
Replies: 30
Views: 193180

Think Positive! (Simple Math Inequality)

<t>The problem seems to be related to Hilbert matrices (a Hilbert matrices being a matrix with entries a_ij = 1/(i+j-1). Hilbert matrices are known to be positive-definite, but very ill-conditioned. The proof of semi-definiteness is a corrollary of the following general theorem (f I remember it corr...
by Steno
August 19th, 2003, 9:47 am
Forum: Student Forum
Topic: Optimisation of Debt Portfolio by Linear programming
Replies: 5
Views: 190126

Optimisation of Debt Portfolio by Linear programming

<t>QuoteOriginally posted by: rishisharmawhere can I look for this paper I tried the searc on the site as well as google or could you give the title of the paper and let me know whether decision variables like coupon rate , term to maturity nd yield are correct parameters for the modelling.You didn'...
by Steno
August 19th, 2003, 8:42 am
Forum: Student Forum
Topic: Optimisation of Debt Portfolio by Linear programming
Replies: 5
Views: 190126

Optimisation of Debt Portfolio by Linear programming

Graduate student to Stavros Zenios : "Is Zenios a common name in Cyprus" (Stavros is from Cyprus)Stavros : "In my family, yes!"
by Steno
August 13th, 2003, 9:14 am
Forum: Student Forum
Topic: Commodities markets' risks
Replies: 3
Views: 189793

Commodities markets' risks

Dudes, you're doing homework here, aren't you?
by Steno
August 13th, 2003, 6:12 am
Forum: Student Forum
Topic: Doob inegality
Replies: 7
Views: 190163

Doob inegality

Out of curiosity, does the potential benefits of posting the same question on two forums outweigh the drawbacks, i.e. the risk of getting banned, the disgrace and the need for changing name ?
by Steno
August 12th, 2003, 7:00 am
Forum: Programming and Software Forum
Topic: Fortran
Replies: 6
Views: 190207

Fortran

<t>A possible use of Fortran written code is the vast number of numerical algorithms written in Fortran, e.g. for optimization, linear algebra etc. The f2c converter can be used for converting Fortran code into C code that is hardly readable but likely to compile on a number of C compilers.It is of ...
by Steno
August 11th, 2003, 10:03 am
Forum: Technical Forum
Topic: Inflation Swap
Replies: 4
Views: 190920

Inflation Swap

<t>If you haven't done a search on this forum yet (and were too lazy to do the same on Google using sensible search terms) you might be able to find some hints on Barclays website for inflation-linked products. Most of the site has restricted access, but you might be interested in the conference par...
by Steno
July 21st, 2003, 6:05 am
Forum: General Forum
Topic: Exotic Greeks
Replies: 9
Views: 191045

Exotic Greeks

<t>nmaughan,why are you so keen on analytical formalae for the greeks ? Analytical formulae might admittedly be better for getting overview of the behaviour of greeks over a large interval, or when underlyings change, but e.g. for interest rate options analytical delta is computed with respect to ch...
by Steno
July 15th, 2003, 7:33 am
Forum: Technical Forum
Topic: Why didn't Mandelbrot get the Nobel
Replies: 75
Views: 196812

Why didn't Mandelbrot get the Nobel

<t>Mandelbrot was not eligible for the Fields medal, since it is a criteria that the medallist be at most 40 years old (or the medal should be awarded for work carried out or published before the age of 40). Of course, this is a relaxation of Albert Einsteins claim that a genius should be proven as ...
by Steno
July 11th, 2003, 7:53 am
Forum: General Forum
Topic: Chooser Caps and Cancellable Swaps
Replies: 1
Views: 189825

Chooser Caps and Cancellable Swaps

<t>A cancellable swap can be structured as a standard swap and a bermuda swaption (such that the embedded swaps in the bermudan cancels the flow on the plain swap). Pricing of Bermudan swaptions is discussed in many threads on this forum, in particular those that deal with BGM/Libor Market models. <...
  • 1
  • 2
  • 3
  • 4
  • 5
  • 7