Dohlman, Erik; Hall, Thomas; Somwaru, Agapi - In: Review of Agricultural Economics 24 (2002) 1, pp. 108-122
Using the "event study" method, we measure the impact on agricultural biotechnology firm equity values of new regulations and other limitations placed on the marketing of biotech crops. Unanticipated declines to biotech firm stock prices indicate that newly imposed regulatory restrictions appear...