Aggregate Technological Innovation and Stock Market Returns
May 3, 2016 - Fundamental Valuation
Does a surge in patent activity predict a surge in, or creative destruction of, equity value? To explore this question, assuming patent applications need not be approved to be exploited, we examine relationships between the growth rates of U.S. patent applications/patents as simple measures of innovation and U.S. stock market returns. Using U.S. patent activity (numbers of applications and patents) by calendar year and annual levels of Shiller’s S&P Composite Index during 1871 through 2015 (142 years), we find that: Keep Reading