THE WEALTH EFFECTS OF ANNOUNCEMENTS OF R&D EXPENDITURE INCREASES

Abstract

Abstract We examine the effect of announcements of plans to increase R&D expenditures on the stock price of rival firms. We test two alternative hypotheses: the first‐to‐innovate hypothesis versus the free‐rider of spillovers hypothesis. Analysis of 114 announcements of increases in R&D expenditures indicates that rival firms suffer a statistically significant negative abnormal return at announcement, which supports the first‐to‐innovate hypothesis. This result provides a rationale for the potentially costly voluntary disclosure of R&D expenditures. A cross‐sectional analysis of the abnormal returns to rival firms reveals that a highly credible announcement has some spillover effects, and that the rival firm earns a much smaller but positive abnormal return. An important implication is that it is always strategically beneficial for the firm to disclose its future R&D plan.

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