Excess demand functions when new assets are introduced

We demonstrate that information on the aggregate excess demand function of an incomplete real asset market economy is not helpful toward predicting the equilibrium of a new economy to which unredundant assets are added. An innovation of assets can completely change the aggregate excess demand functions.     

THE IMPACTS OF FINANCIAL DEREGULATION UPON TRADING EFFICIENCY AND THE LEVELS OF RISK AND RETURN OF JAPANESE BANKS

Japanese banks are very large and were rigidly controlled until financial deregulation began in the late 1970s. This paper measures the impact of deregulation upon the trading efficiency and the levels of risk and return of the largest 27 listed Japanese banks. We found that as the pace of deregulation increased, there were significant increases in trading efficiency as well as in the levels of returns and risks. With deregulation, the Japanese banking system, which contains the largest banks in the world, has become less protected and more vulnerable to the discipline of market movements.     

Excess demand function around critical prices in incomplete markets

We show that the aggregate excess demand function in an economy with incomplete real asset markets can be characterized by Walras’ law, homogeneity, and continuity around critical prices that cause one-dimensional drop of the dimension of the budget set.     

The effect of mergers on credit union performance

The motivation for mergers in the credit union industry differs from the commercial bank industry due to the lack of residual claimants to benefit from wealth gains. In the cooperative ownership environment of credit unions, the owners/members gain utility via the rates offered for loans and deposits. Credit union regulators also gain utility when mergers remove risky credit unions from the industry. We measure these utility gains using the event study method of Bauer [Bauer, K., 2008. Detecting abnormal credit union performance. Journal of Banking and Finance 32, 573–586] employing quadrant tests based on a multivariate test of equality of centroids. We find gains to the owners/members of the target credit union and to the regulators but not to the acquiring firm. We posit that the acquiring credit unions may encounter regulatory pressure to merge. In addition, the owners/members of the acquiring firm may avoid potential disutility in the cooperative insurance environment were the target firm allowed to fail.     

Expansion abroad and jobs at home: Evidence from Japanese multinational enterprises

This paper examines the so-called ‘exporting job’ hypothesis – that expansion of overseas operations of manufacturing multinational enterprises (MNEs) reduces home employment – using a newly constructed matched parent-affiliate panel dataset of Japanese MNEs over the period 1991–2002. The results do not support the widely held view that overseas operations of MNEs lower home employment. On the contrary, there is some evidence that expansion of overseas operations may have helped to maintain the level of home employment.     

Derivatives traders’ reaction to mispricing in the underlying equity

This article examines trading behavior in the options market conditioned on mispricing in the underlying stock. We investigate the price equilibrium between the observed equity asset and the options-implied synthetic share as well as the relative divergence between the two prices. We find a consistently positive relation between the level of stock mispricing and violations of the upper-boundary condition using derivatives, along with an increase in price divergence. To control for the effect of shorting limitations on mispricing, we further examine prices during the short-sale ban in 2008. The results hold and in many instances are more significant during the ban period. Given the persistent disequilibria between the synthetic and observed stock prices, we argue the results are evidence of informed trading in the derivatives market.