Knowledge that Transforms

This paper presents an improved method of pricing vulnerable Black-Scholes options under assumptions which are appropriate in many business situations. An analytic pricing formula is derived which allows not only for correlation between the option's underlying asset and the credit risk of the counterparty, but also for the option writer to have other liabilities. Further, the proportion of nominal claims paid out in default is endogenous to the model and is based on the terminal value of the assets of the counterparty and the amount of other equally ranking claims. Numerical examples compare the results of this model with those of other pricing formulas based on alternative assumptions, and illustrate how the model can be calibrated using market data.

Unlike the Federal Savings and Loan Insurance Corporation and the Bank Insurance Fund, the National Credit Union Share Insurance Fund (NCUSIF) survived the 1980s without falling into a state of accounting insolvency. This paper analyzes how differences in incentive structure constrain the attractiveness of interest-rate speculation and other risk-taking opportunities to managers and regulators of credit unions. Despite these better incentives, robust present-value calculations establish that NCUSIF fell into economic insolvency during the mid-1980s. Besides calculating the extent of this insolvency, the paper also seeks to explain why, after NCUSIF became insolvent, it could rebuild its reserves without an explicit or implicit taxpayer bailout. Our explanation turns on cross-industry coinsurance responsibilities and the shallowness of the fund's observed insolvency relative to industry net worth. We identify forces in the decisionmaking environment tending to limit the depth and duration of unresolved insolvencies at individual credit unions. Managerial opportunities to benefit personally from taking risks that would flow through to NCUSIF are constrained by difficulties in converting a credit union to stockholder form and by the intensity of proactive monitoring of troubled credit unions by sister institutions and other private coinsurers. We conjecture that expanded use of coinsurance and private monitoring could reduce taxpayer loss exposure elsewhere in government deposit insurance systems.

In this paper alternative interest rate processes are estimated for Denmark, Germany, Sweden, and the UK, using the generalized method of moments (GMM). In line with the study by Chan, Karolyi, Longstaff, and Sanders (1992) on US data, there seems to be a positive relation between interest rate level and volatility for some countries. In contrast to their study, it is found that mean-reversion plays an important role for the specification of the interest rate dynamics. The results seem to be robust to the use of different moment conditions, and simulations of the estimated models reveal that they are fairly able to capture non-fitted moments as well. In addition, there is evidence of a structural change in the Danish interest rate process in August 1985, which may be due to a change in monetary policy. The small sample properties of the GMM estimators are also studied through simulations.

This paper examines the risk structure of bank holding companies and the effect of mutual fund activities on bank risk and profitability over the period 1987–1994. Findings from structural change tests indicate a significant decline in bank risk occurred near the mid-point of the study. Results from a confirmatory factor analytic model employed to examine the impact of mutual fund activities on banks suggest that mutual fund activities moderated bank industry systematic risk during the sample period. Mutual fund activities also increased the profitability of banks. These results suggest that mutual funds represent a productive avenue of expansion for bank holding companies.

We re-examine the day-of-the-week effect for eleven indexes from nine countries during the 1969–1992 period. The standard methodology as well as the moving average methodology are used and we find returns to be lower at the beginning of the week (but not necessarily on Monday) for the full period. As in Chang et al. (International evidence on the robustness of the day-of-the-week effect, Journal of Financial and Quantitative Analysis 28 (1993), 497–514), the anomaly disappears for the most recent period in the USA. However, the effect is still strong for European countries, Hong-Kong and Toronto.

This paper takes a novel approach to derive a central bank intervention reaction function. A GARCH model for exchange rates is amended to allow interventions to have an effect on both the mean and the variance of exchange rate returns. An intervention reaction function is obtained by combining the model with a loss function for the central bank. Estimation results for the implied friction model reproduce the familiar ‘leaning against the wind’ policy by the Bundesbank and the Federal Reserve. Furthermore, the central banks appear to have reacted to increases in the conditional variance of daily DM/$-returns.

Using a sample of Finnish initial public offerings, we find that the fraction of equity retained by the original shareholders is significantly positively related to the market-to-brook ratio. The result is consistent with the Leland and Pyle (1977) hypothesis suggesting that the original shareholders can signal the quality of their firm by their willingness to retain equity. Moreover, we find that management ownership's association with relative firm value is significantly positive at low ownership levels but insignificant at high ownership levels. This gives some support for the agency hypothesis which suggests that corporate value is a function of managerial equity ownership.

This study provides further empirical investigation, in the context of giant Japanese banks, of the recent claim by Pulley and Braunstein (1992, A composite cost function for multiproduct firms with an application to economies of scope in banking, Review of Economics and Statistics 74, 221–230), that their new composite model for the multiproduct cost function has important advantages over the separable quadratic, generalized translog and standard translog models. In addition to assessing the composite model's relative ability in measuring global scope and scale economies, the study also extends the P-B analysis to assess measurement of product-specific scope and scale economies, pairwise cost complementarities between outputs, changes in the marginal costs of outputs and technological change. The results appear to confirm P-B's chain. The persistent finding of scale economies for large Japanese banks is also investigated and confirmed.

Based on a sample of 492 takeovers we examine the performance effects of acquisitions and mergers between EC credit institutions over the period 1988–1993. The sample is subdivided according to the degree of managerial leverage on the part of the acquirer and the degree of operational integration. The results indicate that domestic mergers among equal-sized partners significantly increase the performance of the merged banks. Improvement of cost efficiency is also found in cross-border acquisitions. On the other hand, domestic takeovers are found to be influenced predominantly by defensive and managerial motives such as size maximization.

The goal of this paper is to determine whether the tax-timing option effect documented in the U.S. bond market exists outside the U.S. Examining Canadian tax rules suggests that the tax option effect is simpler and less valuable than in the U.S. This view is supported by simulations in the spirit of Constantinides and Ingersoll (1984) as well as by empirical tests conducted on bond triplets following Jordan and Jordan (1991).