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  1. afterworkguinness

    Marginal CVA vs Incremental

    IMO this can be a confusing topic. When a new position is priced, we want to know the value of the counterparty risk of the position and charge it to the client, as you know this is CVA. Assume we have other positions with this counterparty in a netting set; CVA will be expressed at the...
  2. afterworkguinness

    Tip - some source texts available on Google Books

    If you want to drill down into more detail on a topic, a lot of the source texts are available free on Google Books. Entire books are not available as a whole, but if you are able to find the text, using the "search inside this book", you will likely find the piece you are looking for. This is...
  3. afterworkguinness

    Why is exposure higher for a smaller PD than for a larger PD?

    Hi, I'm having trouble grasping this concept; I don't see the relevance of Gregory's explanation either. When expected exposure and probability of default are positively correlated (wrong way risk), the exposure conditional on default is higher than if the two were independent. This part makes...
  4. afterworkguinness

    Part 2 - quantitive or qualitative?

    Memorizing passages isn't going to help you much. As you pointed out, there is a lot of content! You need to understand the content in order to do well. The majority of questions test your understanding of the material and won't ask a direct question. Regarding formulas, many formulas are given...
  5. afterworkguinness

    Error in Cholesky Matrix

    Hi excalibur, this forum is aimed at content testable on the FRM exams. While the basic concept of Cholesky decomposition is mentioned in the material, your question might be better posed here: quant.stackexchange.com
  6. afterworkguinness

    Things not clear about CVA

    Hi @David Harper CFA FRM CIPM , If CVA represents the risk to both parties, how come it is calculated (in Gregory 12.2) using the exposure of the firm to its counterparty (B) and counterparty B's PD ? Why don't we somehow incorporate both PDs ? I'm having a lot of trouble with the Gregory...
  7. afterworkguinness

    Gregory chpt 10: super senior tranches, default/counterparty risk

    I'm also confused by the difference. I *think* I got the idea behind synthetic CDOs thanks to one of David's youtube videos (bottom), but "structured finance securities" are still not clear to me. 1. My understanding of synthetic CDOs: A bank wants to buy protection for its credit portfolio. It...
  8. afterworkguinness

    How does a CDS index create leverage?

    Gregory states that tranching creates leverage, but I don't understand his explanation. "Tranching creates a leverage effect since the more junior tranches carry more risk than the index whilst the most senior tranches have less risk." They way I understand it, I invest 10MM to go long a CDS...
  9. afterworkguinness

    What happens when a CDS index rolls

    Hi, I'm having trouble understanding what happens when a CDS index rolls. The text in Gregory doesn't do much for my understanding :). Thanks in advance.
  10. afterworkguinness

    Margin call freqency vs MtM frequency

    As always, thanks for the very detailed reply.
  11. afterworkguinness

    Margin call freqency vs MtM frequency

    I'm a bit confused with how margin calls typically work in OTC agreements governed by ISA Credit Support Annexes. We have a exposure threshold below which no collateral need be posted. We have a minimum transfer amount, such that when the exposure is >= threshold + minimum transfer amount...
  12. afterworkguinness

    effect of default probability on equity and mezzanine

    Hi, (realizing this was asked nearly a year ago, but it may still be useful to people.) According to Malz "Increases in the default rate increase the bond losses and decrease the equity Internal Rate of Return." So you are correct, an increase in probability of default (PD) alone, with...
  13. afterworkguinness

    Expected loss and credit var

    Sorry @David Harper CFA FRM CIPM , I've got another question on the same topic of calculating CVaR. I'm having trouble wrapping my head around the second half of this chapter, thanks in advance for the help. In practice question 311.2 we are given the following inputs and asked to calculate a...
  14. afterworkguinness

    Expected loss and credit var

    @David Harper CFA FRM CIPM , thanks for clearing that up. I had (incorrectly) thought loss at (alpha or significance level) to be the same as unexpected loss.
  15. afterworkguinness

    Expected loss and credit var

    Hi Gyilmaz, I went back and double checked the notes and can see that, as you said, CVaR= Unexpected Loss= Loss at (alpha or significance level) - Expected Loss. I guess it was a typo in the practice question answers. Given that CVaR = UL - EL, I'm assuming it's incorrect / imprecise to state...
  16. afterworkguinness

    Expected loss and credit var

    Sorry to be that guy who keeps posting questions, this really is by far the best resource out there. The answer to practice question 305.3 for Malz says the following statement is true: CVaR (alpha) = Unexpected loss (alpha), where alpha is a significance or confidence level Q: if CVaR is...
  17. afterworkguinness

    Asset & default correlation (Malz, Portfolio Credit Risk chapter)

    HI @ShaktiRathore , can you walk me through your steps? Thanks
  18. afterworkguinness

    Bootstrapping default rates from CDS spreads

    Hi, The equation Malz gives to set the PV of expected value of both legs of a CDS equal to eachother is below. Can someone offer an explain as to why we divide by 4*10^4 ? Prior to this, when Malz introduces just the portion to calculate the PV of the expected value of the fixed leg (without...
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