Stock price responses on the German suspension of genetically modified maize

Robert Finger

Economics Bulletin, 2010, vol. 30, issue 3, 2220-2229

Abstract: This note investigates the effect of the German governments' decision to suspend the cultivation of genetically modified maize on the stock returns of involved companies. Moreover, the first announcement to investigate a ban as well as a court decision rejecting Monsanto's lawsuit against the suspension are considered. This study is motivated by the expectation that these decisions have consequences beyond the small German market for genetically modified maize. An event study is used to evaluate the economic impacts on stock returns of Monsanto, Bayer and BASF. We find slight evidence that stock prices of Monsanto and BASF responded negatively to the German suspension of genetically modified maize.

Keywords: Event study; Bt maize; Monsanto; Bayer; BASF; GM crops (search for similar items in EconPapers)
JEL-codes: G0 Q0 (search for similar items in EconPapers)
Date: 2010-08-26
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Citations: View citations in EconPapers (1)

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