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Abstract
The objective was to analyze the financial effects produced by the COVD-19 Pandemic in the companies that make up the Dow Jones Industrial Average (DJIA) index. The Event Study technique was applied to 30 entities that make up the DJIA, considering the financial impact of the dates of the World Health Organization (WHO) communications on stock returns. The results of the analysis prove the existence of favorable evidence in relation to the market efficiency of the DJIA, in addition, it was possible to demonstrate that the stock market benefits of the organizations that make up the technology sector have a positive performance in light of the reports on health crises disseminated by the OMS.
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