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Macroeconomic news announcements are elaborate and multi-dimensional. We consider a framework in which jumps in asset prices around macroeconomic news and monetary policy announcements reflect both the response to observed surprises in headline numbers and latent factors, reflecting other...
Persistent link: https://www.econbiz.de/10011900777
This paper proposes a new approach to control the effects of time-varying parameters on the estimates of abnormal returns. Event studies usually assume that the parameters of the market model are stable. Using a sample of firm takeovers, however, I find that this assumption is indeed rejected....
Persistent link: https://www.econbiz.de/10012854703
A detailed treatment of aggregation and capital heterogeneity substantially improves the performance of the investment CAPM. Firm-level predicted returns are constructed from firm-level accounting variables and aggregated to the portfolio level to match with portfolio-level stock returns....
Persistent link: https://www.econbiz.de/10011968853
Generalized Method of Moments (GMM) estimation procedure to cope with the documented difficulties of previous methodologies. We … foreign exchange markets. -- Random Lognormal cascades ; GMM estimation ; best linear forecasting ; volatility of financial …
Persistent link: https://www.econbiz.de/10009389845
Macroeconomic news announcements are elaborate and multi-dimensional. We consider a framework in which jumps in asset prices around macroeconomic news and monetary policy announcements reflect both the response to observed surprises in headline numbers and latent factors, reflecting other...
Persistent link: https://www.econbiz.de/10012908673
market using order statistics and extreme value theory. Using data from the Australian Stock Exchange for the period 1990 to …
Persistent link: https://www.econbiz.de/10013156833
There has been an extraordinary decrease in order execution time on stock exchanges in the past two decades. A related question is whether there has been a similar reduction in orders of magnitude for the lengths of the lead lag time between stocks. If the answer is affirmative, and the lengths...
Persistent link: https://www.econbiz.de/10014285876
In this paper we propose exact likelihood-based mean-variance efficiency tests of the market portfolio in the context of Capital Asset Pricing Model (CAPM), allowing for a wide class of error distributions which include normality as a special case. These tests are developed in the framework of...
Persistent link: https://www.econbiz.de/10001731828
In this paper we propose exact likelihood-based mean-variance efficiency tests of the market portfolio in the context of Capital Asset Pricing Model (CAPM), allowing for a wide class of error distributions which include normality as a special case. These tests are developed in the framework of...
Persistent link: https://www.econbiz.de/10011431982
This paper introduces Quasi-Maximum Likelihood Estimation for Long Memory Stock Transaction Data of unknown underlying … sensitive to start value. Hence, two-stage QML has been suggested. In empirical estimation on two stock transaction data for …
Persistent link: https://www.econbiz.de/10012022130