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  1. David Harper CFA FRM

    Expected shortfall (ES) -- GARP's EOC Question 1.19

    Hi @rajivbangalore25 See image below; this is from a simple XLS I made for for you here at https://www.dropbox.com/s/kp4wp27o3k0cmwg/garp-p1-t4-eoc-1-19.xlsx?dl=0 btw, these are good questions by GARP. Per the lower panel (their question 1.19), we need the (conditional) average of the 5.0% tail...
  2. David Harper CFA FRM

    Exam Feedback October 2020 Part 2 Exam Feedback

    @shuairan82 exactly. None of this surprises me, although I'm always astonished when I observe standards that are so low that even empathy is not achieved (e.g., threshold respect for customers who pay a lot of money), if you know what I mean. I try not too hard to think about it, because I soon...
  3. David Harper CFA FRM

    Swaps question P12 in the notes

    HI @mbbx5va2 In this forum, this question about the swap is in the all-time Top 10; there are probably over a hundred posts that discuss it. Here is my YouTube video on interest rate swap valuation https://forum.bionicturtle.com/threads/t3-32-valuation-of-plain-vanilla-interest-rate-swap.22446/...
  4. David Harper CFA FRM

    David is on vacation the week of November 23rd

    Thank you @Nicole Seaman .... I'm back!
  5. David Harper CFA FRM

    2020 Exam Update from GARP (updated on a regular basis)

    ... i'm stunned, what sort of attitude toward customers (much less human beings) even makes this possible. Who would treat strangers this way, nevermind customers. They apparently announced this at about ~3:45 am loca timel. It's just so disappointing and disrespectful to the entire community of...
  6. David Harper CFA FRM

    Evolution of short term rates

    Hi @Puneeta because in two years, the bond will have only one year until maturity and its price at maturity (per pulling to par) will be $1,000 (or $100 or 1.0). Under the one-year-per-step, at that point in time, the uncertainty of the interest rate has no impact on the price: the price is the...
  7. David Harper CFA FRM

    FAQ After Exam Work Experience Verifying Time

    @waiting_to_get_verified That is totally disappointing, but I'm constantly disappointed by the experiences in this thread. Given how much (successful!) effort and money you spent passing the exam, I'm frustrated for you. The whole experience verification is ridiculously archaic, in my opinion...
  8. David Harper CFA FRM

    Course Mock Exam Glitches

    Thanks @Nicole Seaman so the way to handle this is to right-click on the link and open in a new window? That's how I always handle in-app links anyways ...
  9. David Harper CFA FRM

    Law of one price

    Hi @sohinichowdhury I really like your question (because I love financial philosophy)! The law of one price says that absent confounding factors (e.g., credit risk is a big one), there is only a single discount factor at each maturity. This is my expression but it is equivalent to Tuckman's...
  10. David Harper CFA FRM

    GARP.2012.PQ.P1 American Options, Effects of Dividends, Early Exercise (garp12-p1-19)

    Hi @thanhtam92 I moved to the previous discussion; I believe this is a flawed question (or at a minimum, it is insufficiently precise) but many of GARP's practice questions are flawed (we don't recommend too much study of their PQs before 2018 where error rate exceeds 30%). Thanks,
  11. David Harper CFA FRM

    Enter our Weekly Trivia Contest and Win!!!

    @RajivBoolell I would love to bring back the quizzes, but we have to prioritize our bandwith/resources. When GARP churns the content recklessly, it greatly taxes the EPPs.
  12. David Harper CFA FRM

    F-statistic and T-statistics

    Hi @aalirahman see https://forum.bionicturtle.com/threads/2013-garp-exam-1-q9-remembering-f-statistics.7435/post-29618 i.e.,
  13. David Harper CFA FRM

    Enter our Weekly Trivia Contest and Win!!!

    A bull spread with calls is long c(k1) + short c(k2) where k2 > k1, so the short call is cheaper and there is always an initial investment. The diagram is question 4 is (deviously?) not a profit diagram but a payoff diagram (note: profit = payoff +/- premium, so profit is the net with time value...
  14. David Harper CFA FRM

    reinvestment risk

    @thanhtam92 I did not write that question, I don't like it. Your statement looks correct (i.e., an investor realizes the yield only if the coupons are reinvested at the same yield), but I think the question is simply meant to be false because it omits "greater than" as a possibility. I think the...
  15. David Harper CFA FRM

    Calculation of Conversion Factor [ New study notes Hull ]

    @ktrathen I do agree with your inference but GARP has decided to write the LO in this way ... ... and they've had ten years to change it. Ten years of deciding to retain the "calculate". Would I write different LOs? Yes I would! ;)
  16. David Harper CFA FRM

    Q24 Mock exam GARP 2020 - Surplus at risk

    Hi @Ana Hsu Yes, I agree that "greater than or equal to" generally implies a one-tailed hypothesis test. If I were writing your question, I would eliminate the value so that it asked: "With confidence level of 95%, the surplus value will be greater than or equal to= ?" That's a super minor edit...
  17. David Harper CFA FRM

    Question on SaR

    Hi @evelyn.peng This question has a history with variations and has been discussed here at https://forum.bionicturtle.com/threads/garp-p2-question-24.21932/ and https://forum.bionicturtle.com/threads/q24-mock-exam-garp-2020-surplus-at-risk.23552/ ... where you can see that yes I definitely do...
  18. David Harper CFA FRM

    YouTube T1-3 How to translate volatility over time

    Do you have a numerical examples of "prices up" and "prices down"?
  19. David Harper CFA FRM

    P1.T4.309. Discount factors and law of one price

    Thank you @RajivBoolell ! @juldam If you click-through to the solution at https://forum.bionicturtle.com/threads/p1-t4-309-discount-factors-and-law-of-one-price-tuckman.6848/, you'll see that the first discount factor, d(0.5), is indeed retrieved by d(0.5) = 100.626 / [100*(1+ 2.875%/2)] =...
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