Showing 1 - 10 of 69,079
This paper investigates how investor sentiment affects stock market returns and evaluates the predictability power of sentiment indices on U.S. and EU stock market returns. As regards the American example, evidence shows that investor sentiment indices have an economic and statistical...
Persistent link: https://www.econbiz.de/10012611113
We propose a novel Bayesian model combination approach where the combination weights depend on the past forecasting performance of the individual models entering the combination through a utility-based objective function. We use this approach in the context of stock return predictability and...
Persistent link: https://www.econbiz.de/10012143853
Bayesian Model Averaging (BMA) has recently been discussed in the financial literature as an effective way to account for model uncertainty. In this paper we compare BMA to a new model uncertainty framework introduced by Yang (2004), called Aggregate Forecasting Through Exponential Reweighting,...
Persistent link: https://www.econbiz.de/10005858532
Persistent link: https://www.econbiz.de/10003839319
Financial analysts typically estimate volatilities and correlations from monthly or higher frequency returns when determining the optimal composition of a portfolio. Although it is widely acknowledged that these measures are not necessarily stationary across samples, most analysts assume...
Persistent link: https://www.econbiz.de/10010353307
A striking feature of private equity (PE) is that performance is persistent, with many PE firms consistently producing high (or low) returns net of fees. We use a new variance decomposition model to isolate three components of performance persistence. We find a large amount of long-term...
Persistent link: https://www.econbiz.de/10010387150
The Sharpe ratio is the most widely used metric for comparing performance across investment managers and strategies, and the information ratio is as commonly used to evaluate performance relative to a benchmark. Although it is widely recognized that non-linearities arising from the inclusion of...
Persistent link: https://www.econbiz.de/10010387204
For the popular mean-variance portfolio choice problem in the case without a risk-free asset, we develop a new portfolio strategy to mitigate estimation risk. We show that in both calibrations and real datasets, optimally combining the sample global minimum variance portfolio with a sample...
Persistent link: https://www.econbiz.de/10011547611
Determining the optimal mix of assets in the context of a portfolio construction involves “smart” forecasts of asset returns as well as good estimates of the asset return variances and covariances. Typically, sample moments are used as best estimates of the population moments. Several...
Persistent link: https://www.econbiz.de/10013133412
Mutual funds often disappear following poor performance. When this poor performance is partly attributable to negative idiosyncratic shocks, funds' estimated alphas understate their true alphas. This paper estimates a structural model to correct for this bias. Although most funds still have...
Persistent link: https://www.econbiz.de/10013133676