Intro to Quant Finance: Value at Risk (VaR)

bionicturtledotcom asked:


The basic approach to VaR is delta normal: a scaled standard deviation

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  1. #1 by <a href='http://paintingonlinereviewsite.com'>painting ideas</a> - April 10th, 2009 at 20:12

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    Dear Mr. Harper,

    I am really a great fan of yours. I have really learned a lot from these sort of videos from you.

    Please keep uploading these, I have recommended many friends of that.

    Thanks n Regards,

    Samran Habib
    Dubai
    UAE

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  2. #2 by <a href='http://tubinginformationreview.com'>tubing ideas</a> - April 12th, 2009 at 11:02

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    Statistical functions are available in excel.

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  3. #3 by <a href='http://cashcreatorsgold.com'>business cash ideas</a> - April 13th, 2009 at 18:20

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    I have question. How did you draw that normal distribution graph in the excel?

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  4. #4 by <a href='http://equestrianonlinereviewsite.com'>cosmetics ideas</a> - April 14th, 2009 at 11:21

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    Thanks Aviad, I appreciate that.

    And I agree, I am showing the so-called absolute VaR without reference to the mean; which is sort of okay for short trading (daily or less) periods. But yours (so-called relative VaR) is just better as it is the general case and treats VaR as the unexpected loss. Thanks for making this point!

    David

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  5. #5 by <a href='http://easternsuburbslocksmithssydney.com'>eastern suburbs locksmiths sydney</a> - April 15th, 2009 at 11:41

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    David,

    Thanks for posting these videos. I’d like to point out one oversight in this illustration. When the mean is non-zero (here, it is -0.71%), you must take it into account. So in your spreadsheet, C18 should =C14+C16*C17.

    Of course, the mean is commonly approximately zero and can be ignored, but in this example it’s worth including.

    Thanks again for posting these videos, they are useful!

    Aviad

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  6. #6 by <a href='http://cosmeticdentisteasternsuburbs.com'>cosmetic dentist eastern suburbs sydney </a> - April 17th, 2009 at 16:00

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    I liked it. Very informative staff.

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  7. #7 by <a href='http://fortunewith500gold.com'>business fortune ideas</a> - April 20th, 2009 at 20:59

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    All righty… Now my mind is settled..
    I have burned the midnightoil here in Denmark whit thiese sort of issues the last 2 weeks.. And its great 2 watch someone else practise thiese issues, so I can see it from anohter proff.s point off wiev… So you just keep doing the fine job… :)
    Salut from DK….

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  8. #8 by <a href='http://cosmeticsbuyingreviewsite.com'>business ideas</a> - April 23rd, 2009 at 10:44

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    Hi Mahyar: History informs params but that’s all: it gives us average & volatility. But then I don’t use history, i.e., for normal (parameteric) distribution. I use only the smooth (but unrealistic) curve. A HISTORICAL SIM has NO params. For historical sim, you only need to SORT the historical return and look down the list to 95th-99th %ile, etc. You have a point, under most VaR approaches, historical series at least implicitly informs going-forward model. Thanks for viewing!

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  9. #9 by <a href='http://easternsuburbslocksmithssydney.com'>eastern suburbs locksmiths sydney</a> - April 26th, 2009 at 21:09

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    Hello mister David..
    I have difficult to differ the delta normal approach from the historical distribution..
    The pracsis you are performing in this video is much alike the historical distribution??

    Mahyar, Denmark.

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  10. #10 by <a href='http://cosmeticsbuyingreviewsite.com'>business ideas</a> - April 28th, 2009 at 02:51

  11. #11 by <a href='http://tubinginformationreview.com'>tubing ideas</a> - April 28th, 2009 at 10:10

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