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Unformatted text preview: e CAPM was: Market clearing. Prices for all
assets are assumed to move such that an exogenous quantity of each asset equals
the aggregate demand for the asset (in particular that “borrowing equals lending”
in equilibrium) RISK AND PORTFOLIO MANAGEMENT WITH ECONOMETRICS, VER. 11/10/2012. © P. KOLM. 13 Testing CAPM We can test CAPM using the timeseries regression
rit  rft = ai + bi (rMt  rft ) + eit [For you: What data would you use? What would you use for the risk free rate? What econometric test would you use? And, what issues may you encounter when doing the test? Read more about testing CAPM in I.6.4 in Alexander (2008) Describe how you would extend CAPM and how a multifactor model works (see Chapter 8 in Fabozzi, Focardi et al. (2006)). What is APT, and what
does it say? RISK AND PORTFOLIO MANAGEMENT WITH ECONOMETRICS, VER. 11/10/2012. © P. KOLM. 14 References Carol Alexander (2008). Market Risk Analysis: Quantitative Methods in Finance,
Wiley
Frank J. Fabozzi, Sergio M. Focardi and Petter N. Kolm (2006). Financial
Modeling of the Equity Market: From Capm to Cointegration. Hoboken,
New Jersey, John Wiley & Sons, Inc. Endnotes We say that wM is a market portfolio, if for all i we have wM ,i = 1 Vi
V0 , where Vi is the market value of asset i and V0 = åVi .
i RISK AND PORTFOLIO MANAGEMENT WITH ECONOMETRICS, VER. 11/10/2012. © P. KOLM. 15...
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