The paper analyses on an experimental basis the phenomenon of non-optimal under-diversification in portfolio choice decisions and investigates the reasons behind it. The most important obstacles for optimal diversification are studied the correlation neglect hypothesis and the overconfidence...

We relate the degree of investor portfolio focus to the broader urban economic context of the household. Using a detailed panel of investors in Sweden over the period 1995 to 2000, we find that the level of investor diversification, as measured by number of stocks in the portfolio and by the...

We investigate whether investors tend to form expectations about different categories of assets in a consistent, similar fashion, or whether an investor would apply different models for forming expectations depending on the classification or characteristics of the assets. We investigate the...

American university and college endowments now hold close to one-third of their portfolios in private equity and hedge funds. We estimate the implied beliefs of endowments about alternative assets' returns relative to equities and bonds. At the end of 2012, the typical endowment believes that...

American university and college endowments now hold close to one-third of their portfolios in private equity and hedge funds. We estimate the implied beliefs of endowments about alternative assets' returns relative to equities and bonds. At the end of 2012, the typical endowment believes that...

We relate the degree of investor portfolio focus to the broader urban economic context of the household. Using a detailed panel of investors in Sweden over the period 1995 to 2000, we find that the level of investor diversification, as measured by number of stocks in the portfolio and by the...

Markowitz (1952) hat gezeigt, dass es für risikoaverse Wirtschaftssubjekte sinnvoll ist, das Vermögen auf verschiedene Anlageinstrumente zu verteilen. Doch erweist sich in der Praxis, dass Wirtschaftssubjekte häufig nicht-optimal diversifizierte Portfolios halten. Es gibt viele mögliche...

Für Investitionen am Kapitalmarkt spielt die Portfoliotheorie (Markowitz, 1952) eine bedeutende Rolle und bildet nach wie vor eine wichtige Entscheidungsgrundlage für die Strukturierung von Anlageportfolios. Für risikoaverse Anleger ist die Diversifikation der Portfoliobestandteile eine...