Minimax price bounds in incomplete markets

This paper develops an approach to tighten the bounds on asset prices in an incomplete market by combining no-arbitrage pricing and preference-based pricing, and the approach is applied to a call option in the absence of dynamic rebalancing. With the no-arbitrage pricing, it is straightforward to obtain the initial bounds, which are too wide to be of practical uses. By accepting that a representative agent exhibits risk aversion from a benchmark pricing kernel, it is possible to narrow the bounds considerably. Using the unbiased minimax deviation implicit in the parameters, one can restrict further the set of reasonable values on assets in incomplete markets.     

Far East Asia tourist market segmentation by push attributes

The purpose of this study is to segment the Far East Asia tourist market by using push attributes and to delineate related implications. Literature regarding these related studies and market segmentation processes was reviewed. This study utilized push attribute data collected from those people who would most likely travel to the Far East Asia in the early part of the twenty‐first century. A factor‐cluster approach was employed to find and explore the market characteristics. Seven factors and six clusters were extracted from the data analyses. Cluster scores were significantly different by destination, by country of origin, and by themselves. Clusters have unique characteristics in terms of push attributes. Thus, there is a need to cater each cluster by considering the market preferences separately. Further research is recommended to further the understanding of the Far East Asian tourist market.     

Are there spillover effects of large firms’ growth in supply chain networks? Evidence from the Korean economy

Previous literature has found that inter-firm cooperation leads to higher growth rates for small and medium enterprises (SMEs). However, these studies have focused only on direct effects, such as subcontracting, rather than on spillover effects in supply chain networks (SCNs). Regarding the spillover effects, this article investigates whether a large firm’s growth leads to the growth of the directly and indirectly related SMEs in its SCN, using Korean firm-level data with the system Generalized Method of Moments (GMM) approach. The estimation results show that increases in the sales of large firms significantly affect the growth rates of the related SMEs. These effects, however, diminish as the relationship with the large firm goes down from the first vendor to the second vendor and from the second vendor to the third vendor. In the case of Korea, when a large firm grows by 1%, the first vendor grows by 0.38–0.44%, but the growth rates of the second and third vendors are only 0.036–0.047% and 0.003–0.005%, respectively. Thus, while there are spillover effects, the effects are weak. We discuss what these findings mean for national economic growth.     

Financial crisis and relative productivity dynamics in Korea: evidence from firm-level data (1992–2003)

We have estimated the relative TFP growth at firm level and analyzed the firm dynamics in view of entry and exit of firms in Korea during 1992–2003, which includes the turbulent financial crisis of 1997–1998. Following Pyo and Ha, Hitotsubashi J Econ 48(1): 67–81, (2007), we have adopted a gross output model rather than a value added model of relative TFP analysis. We have found that the cyclical variation of productivity growth plays a dominant role in the decomposition effects before and after the 1997 financial crisis in Korea. Productivity growth is modest before the crisis and strong after the crisis owing to the recovering market efficiency. There is the likelihood that the productivity growth of stayers during the post-crisis period was significantly higher than new entrants. The net entry effect is found to be more sensitive in small business and export-based firms than in large business and domestic market-based firms. Our findings suggest that Korean firms have recovered a modest level of technical change after its severe financial crisis owing to the improvement of management transparency and the build-up of market efficiency during the IMF-mandated restructuring process. But since the entry effect is estimated to be still negative in Manufacturing and the exit effect is negative in Service sector after the crisis, the Korean economy has not fully recovered its metabolism in the post-crisis period and still lacks a creative destructive process to resume another round of sustainable growth path.     

Real Option Pricing and Bounds in Incomplete Markets

This article prices a real option and constructs narrow bounds around the value of real options embedded in capital budgeting decisions by applying the minimax deviations approach to real options in incomplete markets. While it is straightforward to obtain the unique value of a real option with hyperbolic absolute risk aversion (HARA) utility functions, the parameters of risk aversion are often subject to misspecification and raise concerns for practical uses. Recognizing that investors allow deviation from parameter values related to a benchmark pricing kernel, we derive narrow bounds on a real option price. Comparison with the approaches in the literature clarifies advantages of the minimax bounds: simple, consistent, and efficient.     

Estimates of Capital Stock and Capital/Output Coefficients by Industries: Korea (1953–86)

This paper constructs a polynomial-benchmark model to estimate gross and net capital stocks by explicity estimating implicit retirement rates and depreciation rates. The model is applied to Korean data (1953–86) where such data as national wealth survey, national income accounts and industrial census are available. There alternative series of capital stock estimates are generated and compared with previous estimates. It is shown that the use of a pure perpetual-inventory model or a benchmark-year method alone may introduce a significant bias in the measurement of capital stocks for developing economies.