Using 13F position valuations, we show that hedge fund advisors intentionallymismark their stock positions. We document manipulation even after eliminatingissues inherent in the pricing of illiquid securities. The documented mismarking isrelated to hedge fund incentives. Mismarking is more...

We study the dispersion of month-end valuations placed on identical corporatebonds by different mutual funds. Such dispersion is related to bond-specificcharacteristics associated with liquidity and market volatility. TRACE may havecontributed to the general decline in dispersion over our sample...

Using detailed holdings of exchange-traded options, we examine how mutual funds use optionsand how options affect portfolio performance and risk. Options users underperform nonusers bytwo to three percent per year. The underperformance is especially pronounced for funds that areheavy users of...

US equity mutual funds, on average, prefer realization of capital losses to capital gains. Nevertheless,a substantial fraction exhibits the disposition effect of realizing gains more readily than losses. Myanalysis suggests that learning effects have reduced the manifestation of the disposition...

This is the first study of corporate-bond mutual fund performance that examines detailedsecurity-level holdings and returns. The new database allows us to decompose the costsand benefits of active management. In contrast to prior research on equity funds thatshows evidence of stock-selection...

This paper presents a new approach to incorporate estimation risk into mean-variance portfolio selection. The key contribution of our analysis is that we model the estimation risk as a second, independent source of risk.

Expected returns can hardly be estimated from time series data. Therefore, many recent papers suggest investing in the global minimum variance portfolio. The weights of this portfolio are usually estimated by replacing the true return covariance matrix by its time series estimator. However,...

It seems to be widely accepted that Jensen alpha fails to detect successful market timing funds spuriously indicating poor fund performance. Jensen (1972), Admati and Ross (1985), Dybvig and Ross (1985), and Grinblatt and Titman (1989), (1995) attribute that to an upwards biased estimate of the...

Die vorliegende Arbeit beschäftigt sich mit der Liquidität am deutschen Aktienmarkt. Konkret analysieren wir den Preiseinfluss von Transaktionen. Zunächst zeigen wir in einem einfachen dynamischen Optimierungsmodell, wie die optimale Handelsstrategie eines Anlegers von der funktionalen Form...

In der vorliegenden Arbeit werden erstmals die Determinanten der Zuflüsse deutscher Aktienfonds empirisch untersucht. Für den Untersuchungszeitraum von 1991 bis 2003 finden wir einige interessante Unterschiede zum US-Markt. Zunächst bestätigen wir die in der Literatur dokumentierte positiv...