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  1. David Harper CFA FRM

    Chapter 10 Financial Forwards and Futures -- and GARP's practice exams

    Hi @nadaalshahabi Well, for years we asked GARP to genuinely prioritize continuous/discrete, if only for the sake of candidate/EPP convivence, but they just never seemed to care about a strong declaration. Of course you are correct that the practice exam(s) lately advise to “always assume...
  2. David Harper CFA FRM

    IT skills after FRM

    Hi @shuffleshoe great feedback, thank you! The reason I prefer R (aside from home bias) is that I'm not a developer or working in a professional production environment. My work is primarily data/statistical analysis (e.g., EDA) and it's just easy to quickly perform analytics. If I were building...
  3. David Harper CFA FRM

    GARP 2021 Pre Study Pack Q2 (Repo)

    Hi @rohinjain This is another question pattern that created confusion along the way due to GARP's imprecise language. See here for discussion on the 2020 instance of same question (albeit with different inputs https://forum.bionicturtle.com/threads/garp-2020-practice-exam-part-2-q74.23268/ i.e...
  4. David Harper CFA FRM

    FAQ Before Exam Where can I find previous GARP practice exams?

    Hi @corinne.lieberman21 You are correct: the question asks for the lower bound of a confidence interval such that the two-sided deviate (i.e., 1.96 at 95% confidence) is appropriate, rather than the one-sided 1.645 that would be appropriate if the question were asking a VaR-type (aka, SaR in...
  5. David Harper CFA FRM

    Convexity effect

    Hi @librosdeholanda We already have dozens (hundreds?) of convexity discussions and illustrations, here is a tag https://forum.bionicturtle.com/tags/convexity/ (you can also search related tags here https://forum.bionicturtle.com/tags/ e.g., we have tags for analytical-convexity...
  6. David Harper CFA FRM

    P2.T9. Risk Management & Investment Management: Jorion, Chapter 17: VaR and Risk Budgeting

    @mkaabb96 Please don't bump your post to me (I deleted it). This is a forum. You ask, "Can you please guide where I am going wrong in my calculations" but where are your calculations?? It's an optimization problem, here is the XLS at...
  7. David Harper CFA FRM

    Option Pricing using binomial method

    Hi @superturtle Your comment is well-placed (ie, in the right location) because the quoted sentence (for which I did not take the time to pull up the note) is a statement about risk-neutral valuation that underling option pricing. You are correct about real-world (aka, physical) probabilities...
  8. David Harper CFA FRM

    YouTube TI BA II+ Calculator: Essential Settings (TIBA - 01)

    HI @Eustice_Langham I moved your post to this thread attached to my above video that addresses the recommended P/Y and C/Y settings (starting at about 12:40 min ... ) and also see prior discussion above. My strong preference is to leave P/Y = C/Y = 1 as discussed above
  9. David Harper CFA FRM

    YouTube T3-08: Interest rates: compound frequencies

    Sure @superturtle you are correct: at the bottom of page 18, we are incorrect to do that. We're using the (same as above) continuous rates (i.e., 2.25% CC at 1.5 years 2.50% CC @ 2 years) to solve in a formula that assumes they are semi-annual (I think we meant that if they were s.a. rates but...
  10. David Harper CFA FRM

    Bond prices and forward rate

    Ken (@superturtle ) answered here https://forum.bionicturtle.com/threads/t3-08-interest-rates-compound-frequencies.22419/post-88262
  11. David Harper CFA FRM

    YouTube T3-08: Interest rates: compound frequencies

    Hi @superturtle There is no important difference except compound frequency. Please See below. I quickly prepped an XLS for you (open it here at https://www.dropbox.com/s/lvs9mt3d0yn18a1/2021-04-29-forward-rates.xlsx?dl=0). As discussed on dozens of threads, the forward rate is solving for an...
  12. David Harper CFA FRM

    FRM Exam question weightings

    Hi @Eustice_Langham I had assumed the weighting reflect the actual number of questions, but I admit that I can't recall any verification of that. It would be a good test to see if each of the practice exams comport to this ... sorry I don't know
  13. David Harper CFA FRM

    Mapping options (Jorion)

    HI @PJAYAKUMAR I moved your question to general (note for my reference: your question of course refers to https://forum.bionicturtle.com/threads/l2-t5-67-mapping-options-jorion.3638/ ) for later attention, because you are asking me to develop a new topic which is time consuming. About the Greek...
  14. David Harper CFA FRM

    Determination of N(d1) and N(d2)

    Hi @Uolless Those are correct and easily verified with Excel: NORM.S.DIST(.1783, true) = 0.5708. GARP's 2021 Practice only shows z < 0, so you definitely need to be facile with symmetrical normal's implication that N(z) = 1 - N(-z); in this case N(0.1783) = 1 - N(-0.1783) = 1 - 0.4293 = 0.5708...
  15. David Harper CFA FRM

    Credit Valuation Adjustment vs Expected Loss

    Hi @Sameera Yes, I agree with you, and I this it's easiest to understand CVA as an EL designed for the bilateral context. For example, as I wrote here https://forum.bionicturtle.com/threads/credit-var-vs-cva.9563 i.e., ... and then mathematically here at...
  16. David Harper CFA FRM

    Practice question 3 - Backtesting VaR

    Hi @rishivala Right, i mean, setting aside a fact that it appears you already understand power is tricky (ie., this is not the actual power because you conditioned on a true model at 93% b/c that's the best you can do to keep it simple), that's the reason I skipped answering the question: the...
  17. David Harper CFA FRM

    Eurodollar Futures contract - how to think about short/long gaining/losing in a coherent way? SOS

    Hi @alexwallace I am also grateful to @nc27 for a terrific answer! :) About your thought process and ED futures, because I have answered variations on the ED dynamic so many times (is why we beg people to search) that I specifically recorded the following two videos: T3-28: Eurodollar futures...
  18. David Harper CFA FRM

    Eurodollar Futures contract - how to think about short/long gaining/losing in a coherent way? SOS

    Hi @alexwallace That's a pithy, instructive vignette by GARP, I like it. First, candidates should immediately be able to retrieve the forward rate. As has been discussed on this forum dozens of times, the implied forward rate is based on an indifference idea between: exp(4%*2)*exp(f*1) =...
  19. David Harper CFA FRM

    GARP 2016 Q61

    Hi @rohinjain This question has been analyzed quite a bit due to the confusion it created. The primary problem is GARP's language, but I don't know if they've ever fixed it; see https://forum.bionicturtle.com/threads/garp-2020-p2-53-and-garp-2019-p2-53.22374/post-75487 (and maybe here too...
  20. David Harper CFA FRM

    Is there any difference in calculation of type 1 and 2 errors?

    Hi @gitusrini Yes, on the exam you would need to add them up. That's why my question is more a bit more tedious (sorry!) than you would actually encounter. See https://forum.bionicturtle.com/threads/l2-t5-60-basel-ima-backtest-jorion.3610/post-17011 ie..,
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