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by umpbumpfizz
February 14th, 2006, 11:17 am
Forum: Technical Forum
Topic: interview
Replies: 9
Views: 122246

interview

jfuqua u were too lucid in ur description. Thanks 4 the help. i gained a lot.
by umpbumpfizz
July 15th, 2005, 1:34 pm
Forum: Technical Forum
Topic: CDO delta's
Replies: 3
Views: 142985

CDO delta's

<t>if u have developed tranched pricer then its simple if u do it by brute force method.say u r pricing mezz u get 80 bps.now u want to find delta of say ford.say ford spread is 20 bps.kick it 1 to 5 say 1 bps.calculate the new price.if u r using monte carlo simulation generate same random numbers b...
by umpbumpfizz
July 15th, 2005, 1:34 pm
Forum: Technical Forum
Topic: CDO delta's
Replies: 3
Views: 142985

CDO delta's

<t>if u have developed tranched pricer then its simple if u do it by brute force method.say u r pricing mezz u get 80 bps.now u want to find delta of say ford.say ford spread is 20 bps.kick it 1 to 5 say 1 bps.calculate the new price.if u r using monte carlo simulation generate same random numbers b...
by umpbumpfizz
July 12th, 2005, 4:28 am
Forum: Numerical Methods Forum
Topic: Simulating Multivariate Distribution
Replies: 6
Views: 145009

Simulating Multivariate Distribution

<t>hi,use copula to generate correlated random number. any copula will do ir.for example if u have to generate correlated uniform random numbers follow the following steps-suppose correlation matrix is R and we r using gaussian copula-1) Find any suitable decomposition of R( say cholesky) R=AA'2) dr...
by umpbumpfizz
July 12th, 2005, 3:47 am
Forum: Technical Forum
Topic: (urgent) pricing bespoke tranches of cdo
Replies: 18
Views: 149685

(urgent) pricing bespoke tranches of cdo

<t>Bear stearns paper " Valuing and hedging synthetic CDO tranches using base correlation" says-Supposing we have base correlation for standard CDX detachment points and we have to price 6-11%-1) Find the price of the 0-6% tranche by interpolating between 0-3% and 0-7% correlation.2)Find the price o...
by umpbumpfizz
July 5th, 2005, 12:59 pm
Forum: Technical Forum
Topic: optimal portfolio for a cdo deal
Replies: 3
Views: 143882

optimal portfolio for a cdo deal

<t>that criteria is also what i have to develop. like we might look at risk to return. for that u will hae to give some numerical score to rating. for example obligor A spread is 90 basis point and rating BBB- (we somehow give BBB- score of 11) and there is another obligor B with spread as 10 basis ...
by umpbumpfizz
July 5th, 2005, 11:22 am
Forum: Technical Forum
Topic: optimal portfolio for a cdo deal
Replies: 3
Views: 143882

optimal portfolio for a cdo deal

<t>suppose there r 500 companies. u know there raiting and edf. how to choose optimal porfoliio of size 100 from it? can any one post some paper or optimization algorithm. we have some other linear constraints to like maximum number of companies from particular sector, maximum number of companies fr...
by umpbumpfizz
July 5th, 2005, 11:22 am
Forum: Technical Forum
Topic: optimal portfolio for a cdo deal
Replies: 0
Views: 143264

optimal portfolio for a cdo deal

<t>suppose there r 500 companies. u know there raiting and edf. how to choose optimal porfoliio of size 100 from it? can any one post some paper or optimization algorithm. we have some other linear constraints to like maximum number of companies from particular sector, maximum number of companies fr...
by umpbumpfizz
June 30th, 2005, 7:08 am
Forum: Technical Forum
Topic: So, I can get prices (and base correls) for the Itraxx and CDX families of tranches
Replies: 9
Views: 145688

So, I can get prices (and base correls) for the Itraxx and CDX families of tranches

<t>when a cdo deal is made different prices r quoted from both the sides and negotiated. when a new porfolio is launched some guys use sector wise correlation or equity implied to price a cdo and when deal is through once base correaltion curve is obtained. for base correlation i there are 3 papers....
by umpbumpfizz
June 29th, 2005, 9:19 am
Forum: Technical Forum
Topic: So, I can get prices (and base correls) for the Itraxx and CDX families of tranches
Replies: 9
Views: 145688

So, I can get prices (and base correls) for the Itraxx and CDX families of tranches

<t>first of all ur question is not clear. if ur question is that given the price and correlation of DJ itraxx can u price other portfolio,s then answer is nooooo. u will have to price a tranche by a so model. currently market players are using gaussin copula approach with monte carlo simulations. if...
by umpbumpfizz
June 28th, 2005, 5:13 am
Forum: Technical Forum
Topic: Code Revised 11/8/05 Fast Algorithm for Computing Expected DJCDX Tranche Loss in Gaussian Factor Model(VBA code availabl
Replies: 36
Views: 155702

Code Revised 11/8/05 Fast Algorithm for Computing Expected DJCDX Tranche Loss in Gaussian Factor Model(VBA code availabl

hey wells why dont u complete ur program and calculate the spread of cdo tranche.and match the results with dj itraxx.
by umpbumpfizz
June 27th, 2005, 11:08 am
Forum: Technical Forum
Topic: delta of individual obligators while pricing a cdo
Replies: 2
Views: 144733

delta of individual obligators while pricing a cdo

reply thanks for the method. my problem is solved.
by umpbumpfizz
June 24th, 2005, 3:46 am
Forum: Technical Forum
Topic: delta of individual obligators while pricing a cdo
Replies: 2
Views: 144733

delta of individual obligators while pricing a cdo

<t>i priced the synthetic stcdo tranche using gaussian copula monte carlo simulation.to find delta of the tranche i increase the spreads of all obligators by 1 bp and calculate the change in spread of the tranche.repeat the same procedure by decreasing cds spreads of all obligators by 1.tranche delt...
by umpbumpfizz
June 24th, 2005, 3:45 am
Forum: Technical Forum
Topic: delta of individual obligators while pricing a cdo
Replies: 0
Views: 144536

delta of individual obligators while pricing a cdo

<t>i priced the synthetic stcdo tranche using gaussian copula monte carlo simulation.to find delta of the tranche i increase the spreads of all obligators by 1 bp and calculate the change in spread of the tranche.repeat the same procedure by decreasing cds spreads of all obligators by 1.tranche delt...
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