Dyakova, Aneta and Smith, Graham (2013) 'The evolution of stock market predictability in Bulgaria.' Applied Financial Economics, 23 (9). pp. 805-816.
Abstract
The martingale hypothesis is tested for two Bulgarian stock price indices and eight stock prices using finite-sample variance ratio tests in a rolling window. The data cover the period beginning in October 2000 and ending in August 2012 and are corrected to remove the effects of infrequent trading. The rolling window captures short-lived predictability and tracks the evolution of stock market predictability. There are successive periods when returns are predictable and then not predictable. This is consistent with the adaptive markets hypothesis, not the efficient markets hypothesis. Overall, returns are more predictable in times of crisis.
| Item Type: | Journal Article |
|---|---|
| Keywords: | Adaptive markets hypothesis, Bulgarian stock market, martingale, predictability, variance ratio test, weak-form efficiency |
| SOAS Departments & Centres: | Legacy Departments > Faculty of Law and Social Sciences > Department of Economics |
| Subjects: | H Social Sciences > HG Finance |
| ISSN: | 09603107 |
| DOI (Digital Object Identifier): | https://doi.org/10.1080/09603107.2013.767976 |
| Date Deposited: | 15 Jul 2013 08:58 |
| URI: | https://eprints.soas.ac.uk/id/eprint/16717 |
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