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test the weak form efficiency of select South Asian capital markets (India, Sri Lanka, Pakistan, Bangladesh, and Mauritius …
Persistent link: https://www.econbiz.de/10011938297
process, which is of significant relevance for emerging markets in particular. The analysis is based on autocorrelation tests …
Persistent link: https://www.econbiz.de/10010300506
In this paper sequential monitoring schemes to detect nonparametric drifts are studied for the random walk case. The procedure is based on a kernel smoother. As a by-product we obtain the asymptotics of the Nadaraya-Watson estimator and its associated sequential partial sum process under...
Persistent link: https://www.econbiz.de/10010296634
We first report that one-minute returns on TOPIX have exhibited significant autocorrelation at five-minute intervals … jump in excess of a predetermined band seem to be the source of this autocorrelation, since these have been updated at five …-minute intervals since August 1998. Individual stock returns also exhibit fifth-order autocorrelation, but this disappears when the …
Persistent link: https://www.econbiz.de/10010332467
The article tests for a random walk in European equity style indexes. After briefly introducing the efficient market hypothesis, equity styles in general and the used statistical techniques (Variance Ratio Test and modified Rescaled Range Test) it is shown that a random walk in European equity...
Persistent link: https://www.econbiz.de/10010263473
obtain excess returns from both autocorrelation- and moving average-based trading strategies compared to a buy …
Persistent link: https://www.econbiz.de/10010299929
run. Thus, the estimation period shows that with increasing forecasting horizon predictability of simple real returns of …
Persistent link: https://www.econbiz.de/10010297288
This paper examines the long-run dynamics and the cyclical structure of the US stock market using fractional integration techniques, specifically a version of the tests of Robinson (1994a) which allows for unit (or fractional) roots both at the zero (long-run) and at the cyclical frequencies. We...
Persistent link: https://www.econbiz.de/10010293737
Testing for unit roots has been among the most heavily researched topics in Econometrics for the last quarter of a century. Much less researched is the equally important issue of the appropriate transformation if any of the variable of interest which should preceed any such testing. In...
Persistent link: https://www.econbiz.de/10010316510
We derive the probability limit of the standard Dickey-Fuller-test in the context of an exponential random walk. This result might be useful in interpreting tests for unit roots when the test is inadvertantly applied to the levels of the data when the true random walk is in the logs.
Persistent link: https://www.econbiz.de/10010316528