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The purpose of this article is to measure the efficiency of pharmaceutical firms and identify their determinants using Korean and American samples from 1992 to 2004. We document some stylized facts in the patterns and sources of efficiency change in Korean and American pharmaceutical firms. The evidence shows that ownership structure can substantially influence the efficiency of pharmaceutical firms. Especially, institutional ownership rate affects corporate efficiencies negatively, corroborating the myopic institutional investor hypothesis. The hypothesis is supported by both Korean and American samples. However, we find evidence that foreign ownership in Korea promotes efficiency of pharmaceutical firms. It is shown that R&D intensity is positively related to contemporaneous largest ownership rate and prior foreign ownership rate in Korean pharmaceutical firms. In contrast, little evidence is found on the relationship between ownership structure and R&D intensity in the American pharmaceutical industry. These empirical results are robust even after we check the causal links among efficiency, R&D and ownership.

This note demonstrates that an asset's price in an environment with price limit rules can be replicated by the price of a portfolio consisting of a riskless asset and two synthetic options. A procedure is developed to unbundle the unobservable option values imbedded in the actual futures price and impute a theoretical true futures price. Using this framework, evidence from the Treasury Bond futures market suggests that theoretical true futures prices diverge from actual futures prices, on average, 3 h prior to the activation of price limit rules, indicating that price limit moves might 902 Holder, Ma, and Mallett be predictable. The reversal of both the actual futures prices and the theoretical futures prices back within the limit range after a limit move provides support for the possibility that traders tend to overreact when market prices are near price limits.

This article examines the relationship between corn and soybean futures volumes for contracts traded in the United States and Japan. Because the contract specifications for corn and soybeans futures traded on the Chicago Board of Trade (CBOT), the Tokyo Grain Exchange (TGE), and the Kanmon Commodity Exchange (KCE) are highly similar, the existence of interactions might be expected. Previous research has identified price relationships between these similar contracts. With the advent of agricultural trading on the CBOT's Project A overnight electronic trading system, an overlap of trading times of the U.S. and Japanese exchanges for these commodity contracts resulted. An analysis of TGE and KCE corn and soybean futures volumes indicates that these contracts, rather than acting as substitutes, exhibit a complementary relationship. © 2002 Wiley Periodicals, Inc. Jrl Fut Mark 22:355–370, 2002

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