n this paper we analyse recovery rates on defaulted bonds using the Standard and Poors / PMD database for the years 1981-1999. Due to the specific nature of the data (observations lie within 0 and 1), we must rely on nonstandard econometric techniques. The recovery rate density is estimated...

The CKLS (1992) short-term risk-free interest rate process leads to valuation model for both default free bonds and contingent claims that can only be solved numerically for the general case. Valuation equations of this nature in the past have been solved using the Crank Nicolson scheme. In this...

Empirically, we show that the proportion of stocks exhibiting conditional heteroscedastic residuals, is high. We suggested to use the market model with GARCH(1,1) residuals in order to describe daily stock returns and derived a test statistics for the null hypothesis of no abnormal returns,...

In letzter Zeit häufen sich Zahlungsschwierigkeiten von Ländern gegenüber ihrenausländischen Geldgebern. Beim Ausbleiben dieser Zahlungen wird um die Stabilität des internationalen Finanzsystems gefürchtet. Um diese Gefahr abzuwenden, werden den zahlungsunfähigen Ländern unter der...

In this paper we propose analytical approximations for computing implied volatilities when time-to-maturity t is small. The analysis is performed in the framework of a two-factor model with local and stochastic volatility. We describe an algorithm for building the power series approximation of...

This note shows that an investor who does not hold positive amounts of all available assets is eventually overtaken by a completely diversified rival investor.

This paper analyzes the persistence or serial correlation of expected returns as well as the univariate time-series approach that studies the implied autocorrelation function of realized stock returns, including mean reversion and its conditions. In particular, we critically examine whether...

This paper examines how the evidence of stock market predictability affects optimal portfolio choice for buy-and-hold and dynamic investors with different planning horizons. As in Barberis (2000), particular attention is paid to estimation risk, i.e., uncertainty about the true values of the...

This paper uses statistical model selection criteria and Avramovs (2002) Bayesian model averaging approach to analyze the sample evidence on stock market predictability in the presence of model uncertainty. Based on Swiss stock market data, our posterior analysis finds that neither the...

Momentum strategies based on continuations in stock prices have become increas-ingly popular among academics, money managers, and investors in recent years. While there is little controversy on the profitability of momentum strategies, their implementation is afflicted with many difficulties....