Corporate Finance

Many corporate executives view private equity as a last resort, as expensive capital that should be tapped only by companies that don't have access to presumably cheaper public equity. The reality of private equity, however, is more complex, and potentially quite rewarding, for both shareholders and management. This paper surveys some of the academic work on the costs and benefits of public vs. private equity, contrasting the private equity investment process with its public counterpart and exploring how such a process may add value.

Valuation models are useful tools, but they need to be handled with care. When taking the form of mathematical formulas, they can easily be made to convey a false sense of precision. In particular, selective choice of long-term growth rates and discount rates can be used to justify almost any desired valuation.

This paper compares methods for computing the distribution of loss from defaults in a credit portfolio. The methods are applied in the Gaussian copula framework for credit risk and take advantage of the conditional independence of defaults in this framework. As a benchmark we use vanilla Monte Carlo simulation to estimate the tail probabilities of the total losses of the credit portfolio. The first method to be compared is a recursive algorithm to obtain the exact distribution of the total loss of the portfolio, conditional on observed values for the systematic risk factors.

To understand why developing countries do not automatically benefit from financial globalization, both the need for a minimum institutional quality (the threshold hypothesis) and the possibility of varying volatility of different types of capital flows (the composition hypothesis) have been suggested. This paper contends that the two hypotheses are intimately linked, and provides supportive empirical evidence.

America's health care system is the envy of the world, but it faces serious challenges. The costs of care are rising rapidly, the number of uninsured Americans is at an all-time high, and public dissatisfaction is steadily increasing. How can we preserve the strengths of our current system while correcting its weaknesses? Three of American's leading health-care scholars answer that question in Healthy, Wealthy, and Wise. Poorly conceived federal tax policies, insurance regulations, and barriers to entry have distorted health-care markets and inhibited competition.

This paper develops a theory of control as a signal of congruence of objectives, and applies it to financial contracting between an investor and a privately informed entrepreneur. We show that formal investor control is (i) increasing in the information asymmetries ex ante, (ii) increasing in the uncertainty surrounding the venture ex post, (iii) decreasing in the entrepreneur's resources, and (iv) increasing in the entrepreneur's incentive conflict. In contrast, real investor control—that is, actual investor interference—is decreasing in information asymmetries.

A quarter-century ago, Miles and Ezzell (1980) solved the valuation problem of a firm that follows a constant leverage ratio L = D/S. However, to this day, the proper discounting of free cash flows and the computation of WACC are often misunderstood by scholars and practitioners alike. For example, it is common for textbooks and fairness opinions to discount free cash flows at WACC with beta input Beta(S) = [1 + (1 - Tax Rate)L]Beta(U), although the latter is not consistent with the assumption of constant leverage.

Focusing on asset returns governed by a factor structure, the APT is a one-period model, in which preclusion of arbitrage over static portfolios of these assets leads to a linear relation between the expected return and its covariance with the factors. The APT, however, does not preclude arbitrage over dynamic portfolios. Consequently, applying the model to evaluate managed portfolios is contradictory to the no-arbitrage spirit of the model.