We build a model of firm-level innovation, productivity growth and reallocation featuring endogenous entry and exit. A key feature is the selection between high- and low-type firms, which differ in terms of their innovative capacity. We estimate the parameters of the model using detailed US...

The paper investigates the existence and extent of economies of scale in depository and settlement systems. Evidence from 16 settlement institutions across different regions for the years 1993–2000 indicates the existence of significant economies of scale. The degree of such economies,...

This is the first paper that examines economies of scale in stock exchanges. The data employed in the study include cost and output statistics for 37 stock exchanges in four continents around the world for the year 1997. I estimate two traditional cost functions and find that ray (overall) scale...

This paper investigates the existence and extent of economies of scale and scope among stock exchanges. Evidence from 38 exchanges in 32 countries and 4 continents around the world for the years 1989-1998 indicates the existence of significant economies of scale and scope. The degree of such...

European nations substitute between employment protection regulations and labor market expenditures (e.g., unemployment insurance benefits) for providing worker insurance. Employment regulations more directly tax firms making frequent labor adjustments than other labor market insurance...

We study how exploration versus exploitation innovations impact economic growth through a tractable endogenous growth framework that contains multiple innovation sizes, multi-product firms, and entry/exit. Firms invest in exploration R&D to acquire new product lines and exploitation R&D to...

This paper models the effects of financial development on economic growth through better or more efficient utilization of technological innovations. The model is based on the endogenous growth theory of Aghion and Howitt and its derivatives, especially the growth model of Aghion, Howitt and...

We study a financial market adverse selection model where all agents are endowed with initial wealth and choose to invest as entrepreneurs or financiers, or not to invest. We show that often a lack of outside finance leads to the emergence of financial markets where availability of outside...

We study the value of innovation in a case study of one of the most visible innovative products in recent years, Apple’s iPhone. The value effects of news announcements, patent publications, and trademarks relating to iPhone are taken into account. Our estimate of the lower bound on the value...

This paper investigates the market consequences of alliance formation among stock exchanges. These alliances enable brokers to match investors internationally at their local market, thereby eliminating the need for brokers to maintain memberships in foreign stock exchanges. We sort out the...