{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,20]],"date-time":"2026-05-20T15:40:07Z","timestamp":1779291607477,"version":"3.51.4"},"reference-count":28,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2017,5,24]],"date-time":"2017-05-24T00:00:00Z","timestamp":1495584000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>This paper provides a comparative analysis of stock market dynamics of the 1987 and 2008 financial crises and discusses the extent to which risk management measures based on entropy can be successful in predicting aggregate market expectations. We find that the Tsallis entropy is more appropriate for the short and sudden market crash of 1987, while the approximate entropy is the dominant predictor of the prolonged, fundamental crisis of 2008. We conclude by suggesting the use of entropy as a market sentiment indicator in technical analysis.<\/jats:p>","DOI":"10.3390\/e19060244","type":"journal-article","created":{"date-parts":[[2017,5,24]],"date-time":"2017-05-24T07:29:42Z","timestamp":1495610982000},"page":"244","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":26,"title":["The Tale of Two Financial Crises: An Entropic Perspective"],"prefix":"10.3390","volume":"19","author":[{"given":"Ramazan","family":"Gen\u00e7ay","sequence":"first","affiliation":[{"name":"Department of Economics, Simon Fraser University, 8888 University Drive, Burnaby, BC V5A 1S6, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4001-3159","authenticated-orcid":false,"given":"Nikola","family":"Gradojevic","sequence":"additional","affiliation":[{"name":"Department of Economics and Finance, College of Business and Economics, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada"},{"name":"I\u00c9SEG School of Management (LEM-CNRS), Lille 59000, France"},{"name":"Faculty of Technical Sciences, University of Novi Sad, Novi Sad 21000, Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2017,5,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Gell-Mann, M., and Tsallis, C. 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