György Károlyi

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We estimate and compare a variety of continuous-time models of the short-term riskless rate using the Generalized Method of Moments. We find that the most successful models in capturing the dynamics of the short-term interest rate are those that allow the volatility of interest rate changes to be highly sensitive to the level of the riskless rate. A number(More)
At the end of 1997, the foreign companies listed in the U.S. have a Tobin’s q ratio that exceeds by 16.5% the q ratio of firms from the same country that are not listed in the U.S. The valuation difference is statistically significant and largest for exchange-listed firms, where it reaches 37%. The difference persists even after controlling for a number of(More)
This paper develops and tests a model of how country characteristics, such as legal protections for minority investors, and the level of economic and financial development, influence firms’ costs and benefits in implementing measures to improve their own governance and transparency. The model focuses on an entrepreneur who needs to raise funds to finance(More)
This paper re-examines the extent to which gains from international diversification are due to differences in industrial structure across countries. Recent papers by Roll (1992), Journal of Finance 47, 3—42 and Heston and Rouwenhorst (1994), Journal of Financial Economics 36, 3—27 investigate this issue and find conflicting evidence. Using a new database,(More)
This paper investigates how a foreign firm’s decision to cross-list on a U.S. stock exchange is related to the consumption of private benefits of control by its controlling shareholders. Theory has proposed that when private benefits are high, controlling shareholders are less likely to choose to cross-list in the United States because of constraints on the(More)
We study the determinants and consequences of cross-listings on the New York and London stock exchanges from 1990 to 2005. This investigation enables us to evaluate the relative benefits of New York and London exchange listings and to assess whether these relative benefits have changed over time, perhaps as a result of the passage of the Sarbanes-Oxley Act(More)
We estimate and compare a variety of continuous-time models of the short-term riskless rate using the generalised method of moments. We find that the most successful models in capturing the dynamics of the short-term interest rate are those that allow the volatility of interest rate changes to be highly sensitive to the level of the riskless rate. A number(More)
The problem of information integration andresistance to the invasion of parasitic mutants in prebiotic replicator systemsis a notorious issue of research on the origin of life.Almost all theoretical studies published so far havedemonstrated that some kind of spatial structure is indispensable forthe persistence and/or the parasite resistance of any feasible(More)
We review the international finance literature to assess the extent to which international factors affect financial asset demands and prices. International asset pricing models with mean-variance investors predict that an asset’s risk premium depends on its covariance with the world market portfolio and, possibly, with exchange rate changes. The existing(More)
In this paper, we develop and test a theoretical model of multi-market trading to explain the differences in the foreign share of trading volume of internationally cross-listed stocks. The model derives an equilibrium which predicts that, under fairly general conditions, the distribution of trading volume across exchanges competing for order flow is related(More)