We consider the random conductance model where the underlying graph is an infinite supercritical Galton–Watson tree, and the conductances are independent but their distribution may depend on the degree of the incident vertices. We prove that if the mean conductance is finite, there is a...

This paper evaluates numerous diversification strategies as a possible remedy against widespread costly investment mistakes of individual investors. Our results reveal that a very broad range of simple heuristic allocation schemes offers similar diversification gains as well-established or...

This study analyzes the existence of the diversification discount in the German stock market. Recent examples show that the degree of diversification is an important managerial decision variable and highlight the importance of the topic for practitioners. The diversification discount was...

Ende der 90er Jahre schien eine intensive Auswahl der Investments kaum notwendig, da fast jede Aktienanlage deutliche Kursgewinne versprach. Nach dem jähen Absturz an den Börsen haben die Anleger einen beträchtlichen Teil ihres Aktienvermögens verloren. Damit rücken wieder verstärkt...

We analyze whether the diversification discount is driven by the book value bias of corporate debt. Book values of debt may be a more downward biased proxy of the market value of debt for diversified firms, relative to undiversified firms, as diversification leads to lower firm risk. Thus,...

Previous research indicates that a lack of financial sophistication might explain the past strong growth in active management. We construct an objective financial literacy score and analyze the relation between financial literacy and mutual fund investment behavior. We show that there is a...