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  1. David Harper CFA FRM

    Comparing Rates Of Different Maturities

    Agree with @gsarm1987 and this ("You are compensated with a higher interest rate for tying up your money for a longer period of time") is interesting to me because I just wrote a fresh PQ set yesterday so term structures are top of mind, see...
  2. David Harper CFA FRM

    FAQ After Exam Completing the Work Experience Process

    HI Tejas (@tejasips ) We would love to help you with this, but Nicole isn't allowed to evaluate work experience. Only GARP can do that. I'm sorry :( Thanks and ... good luck, David
  3. David Harper CFA FRM

    Course Study Notes and Vital Source

    Thank you @gsarm1987 that is such helpful insight (I didn't even think about the font size!) Hi @LBela4498 Welcome! Thanks for the question/feedback. We don't often get the criticism that the notes are too dense. (I will punt the VS question because I don't have an immediate answer on VS)...
  4. David Harper CFA FRM

    Gregory, Ch3 (Ch9 GARP): Netting

    HI @enjofaes I think that's a reference to Gregory's example (later) in "6.4.4. Netting Impact on Other Creditor". See diagram below. The base case (on the left) is without netting where B's position with respect to ... Party A (Derivatives creditors) is Asset = 140 and Liabilities = 200, and...
  5. David Harper CFA FRM

    YouTube T4-40: Fixed Income: Bullet versus Barbell Bond Portfolio

    HI @MAli9983 On YouTube, I pinned my comment that explains those calculations: ... then, of course, once we've solved for 38.26 we can see that $63.763 - $38.26 = $25.51. I hope that's helpful!
  6. David Harper CFA FRM

    PLEASE READ: Publishing Process for 2023

    Hi @Shau_2207 Yes, we have some fantastic help on videos (as we speak) so we will be updating Investment Risk (please don't quote me on which exactly WITHIN investment risk but we will update investment risk). Thank you!
  7. David Harper CFA FRM

    Futures contract sizes

    HI @GEBEN9829 Lately the exam has been giving the contract sizes in any futures contract question; and I continue to believe that a good question provides the assumption so you don't need to memorize. However, among my original list over a decade ago (yikes!) Just to be "safe," I'd still...
  8. David Harper CFA FRM

    Spreadsheets

    HI @PMcAt5366 Yes, the intention is to include all spreadsheets, but to be candid, I'm a behind on updating them. It is something I am currently working on: updating the XLS to include all of our best work. Will keep you posted ... Thanks!
  9. David Harper CFA FRM

    Explain Correlation-weighted HS example

    HI @frogs It is straight-up (literally) from Dowd's example in his Chapter 4. Matrix A is defined by Choleski's decomposition; in Dowd's Chapter 8 he more clearly defines it so if the historical correlation, rho = 0.30, then you can below (my super quick XLS below) how A*A^T = correlation...
  10. David Harper CFA FRM

    GARP.FRM.PQ.P2 GARP Mock Exam 2022 Part II - Q 29 Probability

    HI @yukoc100 GARP is correct. If the question were instead "What is the conditional probability of default during the second year?" then the answer would be 10.03% / (1 - 0.12*1) = 11.3%. But the questions asks for the joint (aka, unconditional) probability of default during the 2nd year, such...
  11. David Harper CFA FRM

    Chapter 5 Sample moments

    HI @JGURR5668 Here are the two sheets (but keep in mind that the simulated panel has random numbers so generates a new set each time) https://www.dropbox.com/s/udmnbogicmejhzx/3rd_4th-moments.xlsx?dl=0
  12. David Harper CFA FRM

    Chapter 5 Sample moments

    HI @JGURR5668 Not errors. For skew, notice I matched to Excel's skew per the "Excel F()" below; the sample skew shouldn't be smaller than the population skew (0.198 <? 0.201). So the adjustment used is 19.8*100/[(100 - 1)*(100-2)]/1.0^3 = 0.2040x and this sample skew is greater than the...
  13. David Harper CFA FRM

    Chapter 4: Multivariate Variables (p. 16)

    Hi @viswa27 sorry, it's not a question I can help with because I don't agree with the language. On the one hand, it's too simple, but on the other hand, it's too sloppy (i.e., X, actual Y, conditional given X < 1,300 ... WTH). It's just not a good question and, thankfully, nothing like you'd see...
  14. David Harper CFA FRM

    << to be detailed in next major revision >>

    Hi @ASche3191 There is a ton of discussion on this if you search the forum, but very briefly consider a portfolio with 100 credits (loans) and each has PD of 2.0%. If there is zero default correlation, the probability of (eg) at least one default is 1 - 98%^2 = 86.7%; i.e., a low default...
  15. David Harper CFA FRM

    Do whole life insurance have longevity risk or they have mortality risk ?

    @mg30 From T3.C2 Summary: "Whole life insurance has mortality risk in that it becomes more expensive if the policyholder dies at a young age. Annuities have longevity risk in that they become more expensive the longer the policyholder lives" -- May, Bill. 2020 Financial Risk Management Part I...
  16. David Harper CFA FRM

    GARP.FRM.PQ.P2 Liquidity Risk in BT Curriculum

    Hi @Manisangsu You intuition is correct: the Part 2 topic Liquidity and Treasury Risk was added only in 2020. The other topics go back many years (most of them over 5+ years that I've been running BT and writing PQs). Given it's a relatively new addition, there are fewer questions. Re: feeling...
  17. David Harper CFA FRM

    YouTube T2-6 The skew (and sample skew) of a distribution

    Hi @Amierul I think it's correct (as was noted by @Garbanzo here at https://forum.bionicturtle.com/threads/errors-found-in-2021-2022-study-materials-p1-t4-valuation-risk-models.23684/post-90704). In the first panel (the "positive/right" skew) above, we can see (for example) at +2.5, there is...
  18. David Harper CFA FRM

    Question present value floating rate leg

    Hi @dla00 Because it is such a common question over the years, I created this post (below my YT video on Interest Rate Swaps) at https://forum.bionicturtle.com/threads/t3-32-valuation-of-plain-vanilla-interest-rate-swap.22446/post-82735 i.e.,
  19. David Harper CFA FRM

    Course Vital Source Transition

    Hi @Aaron1616, @tdani3656, @bagelcoffee, @Moh, @MFole8227, Daniel (@tdani3656), @Manisangsu, @David Notter , @LCosi6229, @Sahil1999, and @cy123 (copy @JVera3537, @shubhamyadav, @RSHIV2781, @ethanyc and, and recently @SBash5958 who I realize have specific action items that in some cases...
  20. David Harper CFA FRM

    Vasicek model recombining tree

    Hi Antoine I'm not sure I follow you, sorry. In the simplest model (aka, model 1) we have dr = σ*dw where σ in an annual volatility and dw is a random normal with standard deviation of sqrt(Δt). The σ is really just an "untransformed" input. For example, if the annual basis point volatility...
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