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Perfect diversification means no asset can be dropped from (rather than added to) a portfolio

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

 Monday, February 27, 2017

A common belief: adding extra asset to a portfolio will automatically reduce the portfolio risk. We provide a counter-example (both theoretical and with real market data and R-code) and show that a blind diversification may even increase the portfolio risk!


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