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The power of diversification and its limits by the example of DAX

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 Vasily Nekrasov, Senior Risk Analyst and Model Developer at Total Energie Gas GmbH

 Thursday, September 22, 2016

As a follow-up to my previous critical post on robo-advisors. Summary Sometimes (esp. to fool inexperienced retail investors) the diversification is claimed to be a silver bullet (even in a financial crisis). I show that in crises the diversification effect weakens significantly but still persists (esp. for “defensive” stocks). I argue that in a normal (non-turbulent) market the diversification is very helpful in theory but also critically consider its applicability in practice. The results that we obtained for the DAX / German stock market should be extrapolated with caution for other markets. You will also see why it is better to watch and know the market (rather than to blindly rely on quantitative analysis and common sense).


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2 comments on article "The power of diversification and its limits by the example of DAX"

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 Dimitry Murzinov, Risk Management Executive

 Friday, September 23, 2016



this oddity ie correlaton skew has been known for 20 years at least to market practitioners. in fact any stress testing ex relies on this assamption.


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 Dimitry Murzinov, Risk Management Executive

 Friday, September 23, 2016



https://www.google.ru/url?sa=t&source=web&rct=j&url=https://www0.gsb.columbia.edu/faculty/aang/papers/corr.pdf&ved=0ahUKEwizq9PJoKbPAhWzbZoKHewVD0wQFgglMAE&usg=AFQjCNEBn1PxNQfF6_sZg6yw3tLQkFQpNA&sig2=QsGbGSUXXLv_xELOT87epw

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