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by challenged
June 24th, 2006, 12:57 am
Forum: Student Forum
Topic: Technical question on Black-Litterman
Replies: 1
Views: 101037

Technical question on Black-Litterman

<t>The formula is in the middle of page 35 of “Global Portfolio Optimization,” by Fischer Black and Robert Litterman (Financial Analysts Journal, September-October, 28-43).Wai Lee’s book Advanced Theory and Methodology of Tactical Asset Allocation published by Wiley & Sons offers some intuition ...
by challenged
June 13th, 2006, 2:15 am
Forum: Student Forum
Topic: Black Litterman short positions
Replies: 8
Views: 103223

Black Litterman short positions

<t>Fashionmarina – Remember that the Black-Litterman model simply leads you to a set of returns. In other words the BL model is a model for combining information about returns – the CAPM returns with view returns.The CAPM returns are typically calculated using the reverse optimization method describ...
by challenged
March 16th, 2006, 3:31 am
Forum: General Forum
Topic: Various Techniques for Assett Allocation
Replies: 10
Views: 116690

Various Techniques for Assett Allocation

Nothing truly new to add…Articles / working papers on variations on higher moment portfolio selections models seem to be popularSurplus optimization seems to be making a come backMulti-period portfolio selection models…
by challenged
March 16th, 2006, 3:20 am
Forum: Book And Research Paper Forum
Topic: Black Litterman paper
Replies: 6
Views: 124252

Black Litterman paper

<r>I would question the applicability of the standard BL model in a fund of funds setting given the arbitrary nature of the market cap of a fund, nevertheless, have a look at…<URL url="http://www.edhec-risk.com/features/RISKReview.2005-12-19.1651/attachments/Investing%20in%20Hedge%20Funds.pdf"><LINK...
by challenged
February 1st, 2006, 2:26 am
Forum: Programming and Software Forum
Topic: Excel - PCQuote.com Web Query Help
Replies: 1
Views: 121295

Excel - PCQuote.com Web Query Help

<r>The Microsoft Excel web query described at <URL url="http://support.microsoft.com/?kbid=213730">http://support.microsoft.com/?kbid=213730</URL> does not seem to work.I would appreciate any assistance on getting the following bit of code to work.Sub URL_Get_Query() With ActiveSheet.QueryTables.Add...
by challenged
January 16th, 2006, 3:23 am
Forum: Student Forum
Topic: Returns
Replies: 5
Views: 190562

Returns

Thanks!
by challenged
January 13th, 2006, 2:57 am
Forum: Student Forum
Topic: Returns
Replies: 5
Views: 190562

Returns

Can you please provide some references to papers that have applied the CAPM to commodities?
by challenged
August 20th, 2005, 1:07 pm
Forum: Technical Forum
Topic: Reverse Optimization
Replies: 5
Views: 146979

Reverse Optimization

Sharpe 1974
by challenged
June 5th, 2005, 9:50 pm
Forum: Student Forum
Topic: Total Value of Residential Real Estate
Replies: 2
Views: 146554

Total Value of Residential Real Estate

Total Value of Residential Real EstateI would appreciate specific links or ideas on how to estimate the total market value of residential real estate in the US.
by challenged
May 19th, 2005, 11:45 am
Forum: Student Forum
Topic: risk aversion coefficient parameter for BL model
Replies: 5
Views: 149557

risk aversion coefficient parameter for BL model

<t>Regarding your attempt to find a positive historical risk-premium, I’m not convinced that you aren’t looking at an unhedged index.Fortunately, the forward looking risk premium is one the easiest, most agreed upon numbers of finance . There is a ton of literature on risk premia and I view this as ...
by challenged
May 16th, 2005, 9:20 pm
Forum: Student Forum
Topic: risk aversion coefficient parameter for BL model
Replies: 5
Views: 149557

risk aversion coefficient parameter for BL model

<t>Which risk-free rate are using? How are you treating currencies / currency risk?Remember that the risk premium does not need to come from historical data. So even if the historical excess return is negative, expectations may warrant a positive premium. If you believe the long-term risk premium is...
by challenged
May 14th, 2005, 1:38 pm
Forum: Student Forum
Topic: risk aversion coefficient parameter for BL model
Replies: 5
Views: 149557

risk aversion coefficient parameter for BL model

<t>While you can estimate the risk premium using historical data, this should be your best forecast of the forward looking risk premium. For most applications this is more of a long-term equilibrium premium. At any given point in time you may believe that a given market is not in equilibrium. This t...
by challenged
January 26th, 2005, 11:59 pm
Forum: Programming and Software Forum
Topic: 3D surface graph in Excel
Replies: 4
Views: 163012

3D surface graph in Excel

I would appreciate advice / links on how to create a 3D surface graph in Excel. I have three columns of data, X, Y, and Z. All of my X Y points correspond to a Z value of 0, 1, 2, 3, 4, or 5.I would also appreciate 3D graphing add-in recommendations.Thanks.
by challenged
November 19th, 2004, 7:19 pm
Forum: Student Forum
Topic: Are asset class returns normally distributed?
Replies: 2
Views: 168992

Are asset class returns normally distributed?

<t>Are asset class returns normally distributed?What are the recommended tests to determine if a return distribution is statistically different from a normal distribution?What are the popular papers / studies on this subject?I would appreciate it if people could post Excel examples or papers related...
by challenged
October 14th, 2004, 4:39 pm
Forum: Technical Forum
Topic: correlation matrix - positive definite
Replies: 68
Views: 229867

correlation matrix - positive definite

<t>I was hoping to get a range of possible values. For example, as I understand it one asset allocation software maker takes the square root of the largest singular value divided by the smallest singular value. If this value is greater than 20 they don’t continue. How would one have arrived at this ...