Similar Search Results

Risk-Return Relation in Stock Returns under Economic Constraints

Nyberg, Henri - 2022

We obtain new methodological and empirical perspectives on the fundamental risk-return tradeoff in stock returns by imposing economic and asset pricing motivated constraints on the equity premium. In contrast to highly ambiguous past empirical findings, these constraints result in a nonlinear...

Persistent link: https://www.econbiz.de/10014239472

Day-of-the-week effect in the Nigerian stock market returns and volatility : does the distributional assumptions influence disappearance?

Osarumwense, Osabuohien-Irabor - In: European financial and accounting journal : EFAJ 10 (2015) 4, pp. 33-44

This study assesses the influence of error distributional assumption on appearance or disappearance of day-of-the-week effects in returns and volatility using the Nigerian stock exchange (NSE-30). The Gaussian, Student-t, and the Generalized error distribution were incorporated in the GARCH...

Persistent link: https://www.econbiz.de/10011471089

Are International Equity Market Returns Predictable?

Chun, Sungju - 2009

The slope coefficient estimator in predictive regressions for stock returns is biased by a lagged stochastic regressor. There is also a spurious regression if the underlying expected return is highly persistent. This paper studies how the interactions between the two biases affect inferences...

Persistent link: https://www.econbiz.de/10013155218

Change-in-mean tests in long-memory time series : a review of recent developments

Wenger, Kai; Leschinski, Christian; Sibbertsen, Philipp - 2017

It is well known that standard tests for a mean shift are invalid in long-range dependent time series. Therefore, several long memory robust extensions of standard testing principles for a change-in-mean have been proposed in the literature. These can be divided into two groups: those that...

Persistent link: https://www.econbiz.de/10011667075

Nominal and real wages in the UK, 1750 - 2015 : mean reversion, persistence and structural breaks

Caporale, Guglielmo Maria; Gil-Alaña, Luis A. - 2022

This paper analyses the stochastic properties of UK nominal and real wages over the period 1750-2015 using fractional integration techniques. Both the original series and logged ones are analysed. The results generally suggest that nominal wages exhibit a higher degree of persistence, which...

Persistent link: https://www.econbiz.de/10013417630

Signaling Asset Price Bubbles with Time-Series Methods

Taipalus, Katja - 2012

This paper provides an early warning indicator for bubbles in financial markets. The indicator is based on traditional … consensus bubbles and gives warning signals well ahead of the crash, in most cases as early as 12 months ahead. The indicator … also signals most of the 'negative bubbles' before their turning points …

Persistent link: https://www.econbiz.de/10013111338

Bitcoin – Is it a Bubble? Evidence from Unit Root Tests

Malhotra, Akash - 2017

Bitcoin is a decentralised cryptographic virtual currency scheme based on a peer-to-peer network that has attracted substantial number of users in recent years. In this paper, we investigate reasons behind its success and explosive behaviour in its exchange rates in 2013-14. We debate whether...

Persistent link: https://www.econbiz.de/10012972996

Semiparametric tests for the order of integration in the possible presence of level breaks

Iacone, Fabrizio; Nielsen, Morten Ørregaard; Taylor, Robert - 2020

Lobato and Robinson (1998) develop semiparametric tests for the null hypothesis that a series is weakly autocorrelated, or I(0), about a constant level, against fractionally integrated alternatives. These tests have the advantage that the user is not required to specify a parametric model for...

Persistent link: https://www.econbiz.de/10012243070

Testing for a break in persistence under long-range dependencies

Sibbertsen, Philipp; Kruse, Robinson - 2007

We show that tests for a break in the persistence of a time series in the classical I(0) - I(1) framework have serious size distortions when the actual data generating process exhibits long-range dependencies. We prove that the limiting distribution of a CUSUM of squares based test depends on...

Persistent link: https://www.econbiz.de/10010265681

Testing for a break in persistence under long-range dependencies and mean shifts

Sibbertsen, Philipp; Willert, Juliane - 2009

We show that the CUSUM-squared based test for a change in persistence by Leybourne et al. (2007) is not robust against shifts in the mean. A mean shift leads to serious size distortions. Therefore, adjusted critical values are needed when it is known that the data generating process has a mean...

Persistent link: https://www.econbiz.de/10010270042