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    Long time no see

    Hello David: I am pretty amazing what you have done for the site. And I really appreciate your creativity to rebuild such a learning site. To be honest, I just try to pass my other professional exam and the days are numbered. I does elaborate myself to reread them several times and do the...
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    Thanx a lot!!

    Dear David: I am grateful for your help as you are a kindness and fairness guy. I do learn a lot from you. And I DO PASS the FRM 2008 test. Though the exam is hard enough, but your dedication and the well-designed program does help me through.... The test is not that hard if we really...
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    Thanx a lot!!

    Hello there: I am grateful as I get the invitation from David to join the site and learn with all of you. I am grateful for the well systematic designed course and all the Letters and Screencasts provided by David does help me a lot. As the time is limited and budget is constrained...
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    Exam Feedback November 15, 2008

    Hello David: the exam is totally different compared with past ones. I think they try to renew all of those ideas. If they try to do that. I think they have to provide some materials for the testing preparation instead of just the papers and chapters in books. But I know it is really hard...
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    Exam Feedback November 15, 2008

    Hello David: This year is totally different. I guess GARP has pushed itself to the higher ground!! The exam is designed by finance professors for sure. Therefore, it is academic approach instead of .... I think it is a transition moment since It is biased to Corporate risk management I...
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    SAR aand security selection in downstreaming

    Hello David: Thank you so much.... I am grateful.... Have a nice day.... chris
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    SAR aand security selection in downstreaming

    Dear Sir: SaR is the shorthand of "Surplus at Risk". There is an through explanation on the DH's site here..... There is an interesting question I just read... Company ABC asset management has liabilities of USD 100 million and assets of USD 120 million. The anual growth of the...
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    The valuation of Junior and Senior debts (Stulz,ch18)

    Hello David: I have a question as follows A junior bond with a face value of 200 matures in 5 years. A senior bond on the same firms also matures in 5 years, and has a face value of 100. Assume -A=0.5 and the riskfree rate =0.4. Firm value is equal to 400. Using the Merton model, what is...
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    Distance to Default

    Hello David: Thank you for providing me an intuitive way for this... chris
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    Distance to Default

    Hello David: The issue is inspred from the lecture(the screencast) you give... therefore it is simple to use the other one DD=ln(V/Default value)/sigma_asset ...Right?? thanks... Chris
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    Tranched Portfolio Default Swaps [Credit C, slides 34-35]

    Hello David: I am so sorry about the question I ask...Yes, you have mention the point in the lecture... BUT I FORGOT.......I have to reread that one AGAIN.... Thank you so much.... Chris
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    LGD with a distribution

    Hello David: The formula of LGD derived from the PD in some sence shows that they are not indepedent, right? But in the DeSergvigny and others we often assume that PD and LGD are independent, right?? But as the formula similar to BSM model, it shows that they are not...Right? How can we...
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    Distance to Default

    Hello David: As the screencast you give and the lecture note you provide... May I think the topic as follows... Take the Taylor's expansion of ln(x) around x=1 ln(x)= ln(1)+(1/x)(x-1)+remaining term therefore we have ln(x)=1-(1/x).... Use this one for V/D ln(V/D)=...
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    Distance to Default

    Hello David: The formula of Distance to Default (p 51 in the 2008 Formula) DD=(V-D)/(V*sigma_a) 1. I try to think them as comparing (V-D)/V with the multiple of sigma_a, does it right? 2. Also, how can we connect it to the one given in the chapter of DeServigny...
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    LGD with a distribution

    Hello David: the formula about the long term mean volatility of GARCH(1,1)(p.18 of 2008 formula) is a little wrong... Persistence GARCH (1, 1) is unstable if the persistence > 1. A persistence of 1.0 indicates no mean reversion. A low persistence (e.g., 0.6) indicates rapid decay and high...
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    Tranched Portfolio Default Swaps [Credit C, slides 34-35]

    Hello David: I am a little confused...As we know that CDS can not be used for the credit deterioration, right?? Therefore, it is used for default..... how can we use CDS for the credit deterioration indirectily or synthetically?? Maybe I ask the wrong question... Thanks...
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    CRAM sessions and Flash quizzes

    Hello David: I am grateful for those things you have done for.....Thank you so much.... Looking forward to seeing.....Sincerely..... Chris
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