Recent studies suggest that the conditional CAPM holds, period by period, and that time-variation in risk and expected returns can explain why the unconditional CAPM fails. In contrast, we argue that variation in betas and the equity premium would have to be implausibly large to explain important asset-pricing anomalies like momentum and the value premium. We also provide a simple new test of the conditional CAPM using direct estimates of conditional alphas and betas from short-window regressions, avoiding the need to specify conditioning information. The tests show that the conditional CAPM performs nearly as poorly as the unconditional CAPM, consistent with our analytical results.

We investigate the role of “arbitrageurs,” who exploit price discrepancies between redundant securities. Arbitrage opportunities arise endogenously in an economy populated by rational, heterogeneous investors facing investment restrictions. We show that an arbitrageur alleviates these restrictions and improves the transfer of risk amongst investors. When the arbitrageur behaves noncompetitively, taking into account the price impact of his trades, he optimally limits the size of his positions due to his decreasing marginal profits. When the arbitrageur is subject to margin requirements and is endowed with capital from outside investors, the size of his trades and capital are endogenously determined in equilibrium.

We focus on the relations among inside ownership, board composition, unaffiliated block ownership, and compensation structure for a sample of firms following their IPOs. Specifically, we follow firms for up to eleven years after their IPOs and examine the full sample and subsamples of firms that survive, are acquired, or that file for bankruptcy during the sample period. We find that as CEO ownership declines, board independence, board seats held by venture capitalists, and unaffiliated block ownership increase. Our findings suggest that as inside ownership decreases alternative governance mechanisms evolve to help mitigate the resulting increase in agency costs. Interestingly, the associations between CEO ownership, the fraction of venture capital board membership, and unaffiliated block ownership exist only for firms that survive over the eleven-year sample period.

This paper demonstrates the existence of two different kinds of externalities induced by an auditor servicing multiple clients at the same time. First, we show that the capital market price for a client can increase in the number of qualified reports that his auditor issues to his other clients, thus producing a stock price externality. Second, when the audit firm has limited wealth, an additional client can actually decrease the audit quality and increase the average likelihood of audit failure relative to a single-client setting because of reporting externalities. Our analysis also demonstrates how requiring a more effective audit oversight mechanism can actually produce unintended consequences such as an increased likelihood of audit failures.

Recent corporate debt offerings have included a covenant specifying a pre-determined payment to debtholders when the debt is downgraded. We examine the incentive for equityholders to increase firm risk (and the associated costs) when debt includes a “rating trigger.” Equityholders of firms with a low-risk profile and operating flexibility choose debt with a trigger, while equityholders of firms with a high-risk profile and less flexibility choose regular debt. A trigger that requires an equity infusion better mitigates conflicts between equityholders and debtholders than a trigger paid by liquidating assets. A trigger that increases the coupon rate is not optimal.

This paper contributes to a new literature on the factors that affect firms' corporate governance practices. We find that regulatory factors are highly important, largely because Korean rules impose special governance requirements on large firms (assets extgreater2 trillion won). Industry factors, firm size, and firm risk are also important. Other firm-specific factors only modestly affect governance even when they are statistically significant. This suggests that many Korean firms do not choose their governance to maximize share price. Among firm-specific factors, the most significant are size (larger firms are better governed) and firm risk (riskier firms are better governed). Long-term averages of profitability and equity finance need are significant, where short-term averages are not. This is consistent with “sticky governance”, in which firms alter their governance slowly in response to economic factors.

If investors are myopic mean-variance optimizers, a stock's expected return is linearly related to its beta in the cross-section. The slope of the relation is the cross-sectional price of risk, which should equal the expected equity premium. We use this simple observation to forecast the equity-premium time series with the cross-sectional price of risk. We also introduce novel statistical methods for testing stock-return predictability based on endogenous variables whose shocks are potentially correlated with return shocks. Our empirical tests show that the cross-sectional price of risk (1) is strongly correlated with the market's yield measures and (2) predicts equity-premium realizations, especially in the first half of our 1927–2002 sample.

We investigate the empirical effect of violence, as compared to other trade impediments, on trade flows. Our analysis is based on a panel data set with annual observations on 177 countries from 1968 to 1999, which brings together information from the Rose data set, the iterate data set for terrorist events, and data sets of external and internal conflict. We explore these data with traditional and theoretical gravity models. We calculate that, for a given country year, the presence of terrorism together with internal and external conflict is equivalent to as much as a 30% tariff on trade. This is larger than estimated tariff-equivalent costs of border and language barriers and tariff-equivalent reduction through generalized systems of preference and WTO participation.