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An Examination of Long‐Term Abnormal Stock Returns and Operating Performance Following R&D Increases

An Examination of Long‐Term Abnormal Stock Returns and Operating Performance Following R&D Increases ABSTRACT We examine a sample of 8,313 cases, between 1951 and 2001, where firms unexpectedly increase their research and development (R&D) expenditures by a significant amount. We find consistent evidence of a misreaction, as manifested in the significantly positive abnormal stock returns that our sample firms' shareholders experience following these increases. We also find consistent evidence that our sample firms experience significantly positive long‐term abnormal operating performance following their R&D increases. Our findings suggest that R&D increases are beneficial investments, and that the market is slow to recognize the extent of this benefit (consistent with investor underreaction). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Finance Wiley

An Examination of Long‐Term Abnormal Stock Returns and Operating Performance Following R&D Increases

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References (63)

Publisher
Wiley
Copyright
© American Finance Association
ISSN
0022-1082
eISSN
1540-6261
DOI
10.1111/j.1540-6261.2004.00644.x
Publisher site
See Article on Publisher Site

Abstract

ABSTRACT We examine a sample of 8,313 cases, between 1951 and 2001, where firms unexpectedly increase their research and development (R&D) expenditures by a significant amount. We find consistent evidence of a misreaction, as manifested in the significantly positive abnormal stock returns that our sample firms' shareholders experience following these increases. We also find consistent evidence that our sample firms experience significantly positive long‐term abnormal operating performance following their R&D increases. Our findings suggest that R&D increases are beneficial investments, and that the market is slow to recognize the extent of this benefit (consistent with investor underreaction).

Journal

The Journal of FinanceWiley

Published: Apr 1, 2004

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