A PRACTICAL APPROACH TO CAPITAL STRUCTURE FOR BANKS

Like U.S. companies in many industries. American's bank's attention to capital structure is reflected in their high level of stock repurchases in recent years. But, if banks are responding to some of the same economic forces that are driving industrial firms to shed excess capital, there are some important differences between banks and industrials that complicate the process of establishing appropriate capital levels for banks. The most important difference comes from regulation. Since the implementation by FDICIA of risk based capital guidelines in the early 1990s, the capital ratios of U.S. banks have increased substantially. In fact, most U.S. banks today carry considerably more capital than is required by the regulators. This tendency to exceed regulatory capital levels is especially pronounced for smaller institutions, which can in turn be explained by the riskier profile of smaller banks: While such banks have the highest proportion of the lowest-risk assets (such as cash, mortgages, and marketable securities), they also have a much greater degree of concentration (and co-variance) among their riskier assets.
This article recommends using a quantitative economic approach (such as a RAROC model) to generate a lower bound on the amount of necessary capital. This estimate can then be translated into a target capital structure by taking account of a variety of practical, qualitative considerations, including banks' preference to maintain capital levels that provide a comfortable margin above bank regulators' "well capitalized" levels. Although such considerations will vary in importance from one bank to another, they will generally include management's risk tolerance, regulatory constraints, market pressures (as reflected in peer group capital levels), the bank's prospects and investment plans, and, for larger banks, rating agency requirements.     

A NEW APPROACH TO CONTROLLING FOR THIN TRADING

Recent research has shown that thin trading can seriously bias beta estimates. Present techniques for controlling this bias in research designs involve the adjustment of OLS betas. This paper presents a new methodology that controls for this bias by forming portfolios where the level of thin trading is held constant, while the difference of another variable, pertinent to a specific research design, is maximized across the portfolios. Directly controlling the level of thin trading avoids reliance on beta adjustment techniques. Further, the linear programming model permits the control of the mean and higher moments of additional variables across portfolios.     

A NEW APPROACH TO CAPITAL BUDGETING FOR FINANCIAL INSTITUTIONS

The classic approach to capital budgeting based on the standard Capital Asset Pricing Model (CAPM) says that the hurdle rate (or cost of capital) for any new project or investment should depend only on the riskiness of that investment. Thus, the hurdle rate, and hence the expected value of the investment, should not be affected by the financial policy of the company evaluating the project. Nor should the hurdle rate be influenced by the company's risk management policy, or by the kind of assets it already has on the balance sheet. This article argues that such a “singlefactor” model may be inappropriate for banks and other financial institutions for two main reasons:

• ? it is especially costly for banks to raise new external funds on short notice;
• ? it is costly for banks to hold a buffer stock of equity capital on the balance sheet, even if this equity is accumulated over time through retained earnings.

The single-factor CAPM ignores such costs and, in so doing, understates the true economic costs of “illiquid” bank investments. Illiquid investments require special treatment because they impose risks that, although “diversifiable” by shareholders, cannot be readily hedged by the bank and therefore require it to hold more equity capital. The authors accordingly propose a “two-factor” model for capital budgeting— one in which banks' investment decisions are linked to their capital structure and risk management decisions. One of the key implications of the two-factor model is that a bank should evaluate new investments according to both their correlation with the market portfolio and their correlation with the bank's existing portfolio of unhedgeable risks. The authors describe several potential applications of their model, including the evaluation of proprietary trading operations and the pricing of unhedgeable derivatives positions. They also compare their approach to the RAROC methodology that has been adopted by a number of banks.     

SECURITIZATION: A FINANCING STRATEGY FOR EMERGING MARKETS FIRMS

With emerging markets now in crisis, companies in developing countries are finding it difficult to obtain financing. Securitization, a transaction structure in which the securities sold to investors are backed by a company's receivables, is one of the few vehicles with at least the potential to provide financing at economic rates in the current environment of uncertainty.
Unlike U.S. securitization issues, emerging markets transactions often use a structure known as future flows securitization, in which the securities are backed by receivables that are not expected to be generated until after issuance. This article begins by describing how the process of future flows securitization carves out securities with levels of political risk acceptable to foreign capital market investors. Then it traces the history of emerging markets securitization from its origins in Latin America to its more recent uses during the Asian crisis. Securitization helped bring foreign investors back to Latin America after its debt crisis of the early 1980s. And while the Asian crisis has sharply reduced new issuance for all kinds of emerging market financings, the volume of securitization issues appears to have declined less precipitously than other types of transactions geared to foreign investors. Moreover, investment bankers are now hard at work planning new securitization issues for companies in both Latin America and Asia.
In exploring the longer-term effects of securitization on both domestic issuers and their economies, the author suggests that securitization could play a pivotal role in restoring emerging markets companies' access to global financial markets. Indeed, with a few exceptions such as Malaysia, most emerging markets are now responding to the crisis by taking measures to protect investors, such as requiring greater financial transparency and dispelling legal uncertainties that have discouraged securitization in particular and overseas investment more generally.     

MEASURING CORPORATE TAX RATES AND TAX INCENTIVES: A NEW APPROACH

Taxes play an important but underemphasized role in the valuation of a company and its projects. For example, the authors estimate that the expected tax benefits from interest deductions by all publicly traded U.S. corporations were responsible for almost $1.4 trillion of their total market value of $12.7 trillion in 1991. In the case of RJR's 1989 leveraged buyout alone, the capitalized value of the interest tax shield amounted to several billion dollars (or about 25%) of the company's market value.
This article argues that, to maximize shareholder wealth, the corporate planning process should include a careful analysis of corporate tax incentives. Using several examples, the authors show how earnings variability and major provisions of the tax code interact to affect a company's expected marginal tax rate. After describing the complexities involved in properly calculating corporate tax rates, the article concludes by describing a simulation method the authors have developed to measure a company's effective marginal tax rate and, hence, its tax incentives to use more leverage (or some other means of reducing taxable income).
In furnishing a method for calculating marginal tax rates with greater accuracy, the authors also provide a clue to resolving the capital structure puzzle discussed in the roundtable at the head of this issue. In particular, their recent research corrects earlier studies in the finance literature by showing that when marginal tax rates are measured before financing (that is, based on income before interest expense is deducted), there is a positive relation between debt usage and tax rates.     

MEASURING THE MEANING OF FINANCIAL STATEMENT TERMINOLOGY: A PSYCHOLINGUISTICS APPROACH

Measuring the meaning of communication between and among producers (certified public accountants, academic accountants, and private accountants) and users (chartered financial analysts, commercial bank loan officers, and shareholders) of financial statements is the purpose of this study. Two psycholinguistic techniques, classification analysis and association analysis, were used in a field experiment to measure the intergroup and intragroup transference of denotative (objective) and connotative (subjective) meaning, respectively. The study concluded that we are somewhere in between the “worst” and the “best” on a communication continuum. The evidence indicated only one communication problem — a problem involving the transfer of connotative (subjective) meaning on an intergroup basis, that is, between producers and users.     

A SIMPLIFIED APPROACH TO SHORT-TERM INTERNATIONAL DIVERSIFICATION

Using Eurocurrency deposit interest rates, currency exchange rates, and inflation rates in a mean-variance portfolio analysis, the authors develop portfolios of interest-bearing deposits in London banks denominated in various currencies. These easily constructed multicurrency portfolios are shown to provide better risk-return positions than comparable single currency holdings.