Does Innovation Cause Stock Market Runups? Evidence from the Great Crash
- (pp. 1370-96)
Abstract
This article examines the stock market's changing valuation of corporate patentable assets between 1910 and 1939. It shows that the value of knowledge capital increased significantly during the 1920s compared to the 1910s as investors responded to the quality of technological inventions. Innovation was an important driver of the late 1920s stock market runup, and the Great Crash did not reflect a significant revaluation of knowledge capital relative to physical capital. Although substantial quantities of influential patents were accumulated during the post-crash recovery, high technology firms did not earn significant excess returns over low technology firms for most of the 1930s. (JEL G14, N12, N22, O30)Citation
Nicholas, Tom. 2008. "Does Innovation Cause Stock Market Runups? Evidence from the Great Crash." American Economic Review, 98 (4): 1370-96. DOI: 10.1257/aer.98.4.1370Additional Materials
JEL Classification
- G14 Information and Market Efficiency; Event Studies
- N12 Economic History: Macroeconomics; Growth and Fluctuations: U.S.; Canada: 1913-
- N22 Economic History: Financial Markets and Institutions: U.S.; Canada: 1913-
- O30 Technological Change; Research and Development: General