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Regulatory Events and Biotech Firm Share Prices By Erik Dohlman, Thomas Hall, and Agapi Somwaru ERS Elsewhere No. 0218, July 2002 Using 'the event study' method, this article measures the impact on agricultural biotechnology firm stock prices of new regulations and other limitations placed on the marketing of biotech crops. Implications for incentives to engage in new biotech crop research and development are discussed. Keywords: agricultural biotechnology, event study, research and development Get this Document in Adobe Acrobat PDF format. web administration: webadmin@ers.usda.gov page updated: July 3, 2002

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