Search Results
Showing results 1 to 2 of approximately 2.
(refine search)
Briefing
How Speculation Affects the Market and Outcome-Based Values of Innovation
nnovation booms often coincide with speculative bubbles. Using data on over 1 million patents, we document two ways in which speculation creates a disconnect between the market valuation of innovation and its actual economic impact. First, an innovation during bubbles raises the stock price of its creator by 40 percent more than is justified by future outcomes. Next, competitors' stock prices move little during bubbles despite their profits suffering. We present a theory of investor disagreement about which firms will succeed that reconciles both facts. Policymakers should account for the ...
Report
Assessing the impact of short-sale constraints on the gains from international diversification
This paper examines the impact of short-sale constraints on the magnitude of international diversification benefit for U.S. investors during the period of 1976?1998. The diversification benefit is measured as the increase in expected return when switching from the U.S. equity index portfolio to the efficient international portfolio with equal variance. Although short-sale constraints reduce the diversification benefit, we find that the reduction caused by the constraints on emerging markets is small. This result holds in both pre- and post-liberalization periods. They are also unaffected by ...