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Coups, Corporations, and Classified Information
Stockholm University, Faculty of Social Sciences, Institute for International Economic Studies.
2011 (English)In: Quarterly Journal of Economics, ISSN 0033-5533, E-ISSN 1531-4650, Vol. 126, no 3, 1375-1409 p.Article in journal (Refereed) Published
Abstract [en]

We estimate the impact of coups and top-secret coup authorizations on asset prices of partially nationalized multinational companies that stood to benefit from U.S.-backed coups. Stock returns of highly exposed firms reacted to coup authorizations classified as top-secret. The average cumulative abnormal return to a coup authorization was 9% over 4 days for a fully nationalized company, rising to more than 13% over 16 days. Precoup authorizations accounted for a larger share of stock price increases than the actual coup events themselves. There is no effect in the case of the widely publicized, poorly executed Cuban operations, consistent with abnormal returns to coup authorizations reflecting credible private information. We also introduce two new intuitive and easy to implement nonparametric tests that do not rely on asymptotic justifications.

Place, publisher, year, edition, pages
2011. Vol. 126, no 3, 1375-1409 p.
National Category
Economics
Identifiers
URN: urn:nbn:se:su:diva-62545DOI: 10.1093/qje/qjr030ISI: 000294556700007OAI: oai:DiVA.org:su-62545DiVA: diva2:442811
Available from: 2011-09-22 Created: 2011-09-22 Last updated: 2017-12-08Bibliographically approved

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