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Stock Return Predictability: Is it There?

Review of Financial Studies 2007 20(3), 651-707
We examine the predictive power of the dividend yields for forecasting excess returns, cash flows, and interest rates. Dividend yields predict excess returns only at short horizons together with the short rate and do not have any long-horizon predictive power. At short horizons, the short rate strongly negatively predicts returns. These results are robust in international data and are not due to lack of power. A present value model that matches the data shows that discount rate and short rate movements play a large role in explaining the variation in dividend yields. Finally, we find that earnings yields significantly predict future cash flows.

Financial Constraints, Asset Tangibility, and Corporate Investment

Review of Financial Studies 2007 20(5), 1429-1460
Pledgeable assets support more borrowing, which allows for further investment in pledgeable assets. We use this credit multiplier to identify the impact of financing frictions on corporate investment. The multiplier suggests that investment–cash flow sensitivities should be increasing in the tangibility of firms' assets (a proxy for pledgeability), but only if firms are financially constrained. Our empirical results confirm this theoretical prediction. Our approach is not subject to the Kaplan and Zingales (1997) critique, and sidesteps problems stemming from unobservable variation in investment opportunities. Thus, our results strongly suggest that financing frictions affect investment decisions.

Portfolio Selection in Stochastic Environments

Review of Financial Studies 2007 20(1), 1-39
In this article, I explicitly solve dynamic portfolio choice problems, up to the solution of an ordinary differential equation (ODE), when the asset returns are quadratic and the agent has a constant relative risk aversion (CRRA) coefficient. My solution includes as special cases many existing explicit solutions of dynamic portfolio choice problems. I also present three applications that are not in the literature. Application 1 is the bond portfolio selection problem when bond returns are described by “quadratic term structure models.” Application 2 is the stock portfolio selection problem when stock return volatility is stochastic as in Heston model. Application 3 is a bond and stock portfolio selection problem when the interest rate is stochastic and stock returns display stochastic volatility.

International Evidence on Cash Holdings and Expected Managerial Agency Problems

Review of Financial Studies 2007 20(4), 1087-1112
This article uses managerial control rights data for over 5000 firms from 31 countries to examine the net costs and benefits of cash holdings. We find that when external country-level shareholder protection is weak, firm values are lower when controlling managers hold more cash. Further, when external shareholder protection is weak we find that firm values are higher when controlling managers pay dividends. Only when external shareholder protection is strong do we find that cash held by controlling managers is unrelated to firm value, consistent with generally prevailing U.S. and international evidence.

Trade Credit: Suppliers as Debt Collectors and Insurance Providers

Review of Financial Studies 2007 20(2), 491-527 open access
This article examines how in a context of limited enforceability of contracts suppliers may have a comparative advantage over banks in lending to customers because they are able to stop the supply of intermediate goods. Suppliers may act also as liquidity providers, insuring against liquidity shocks that could endanger the survival of their customer relationships. The relatively high implicit interest rates of trade credit are the result of insurance and default premiums that are amplified whenever suppliers face a relatively high cost of funds. I explore these effects empirically for a panel of UK firms.

Valuation in Over-the-Counter Markets

Review of Financial Studies 2007 20(6), 1865-1900 open access
We provide the impact on asset prices of search-and-bargaining frictions in over-the-counter markets. Under certain conditions, illiquidity discounts are higher when counterparties are harder to find, when sellers have less bargaining power, when the fraction of qualified owners is smaller, or when risk aversion, volatility, or hedging demand is larger. Supply shocks cause prices to jump, and then “recover” over time, with a time signature that is exaggerated by search frictions: The price jump is larger and the recovery is slower in less liquid markets. We discuss a variety of empirical implications.

Asset Prices and Exchange Rates

Review of Financial Studies 2007 20(4), 1139-1180
We study the implications of introducing demand shocks and trade in goods into an otherwise standard international asset pricing model. Trade in goods gives rise to an additional channel of international propagation—through the terms of trade—absent in traditional single-good models. The inclusion of demand shocks helps overturn many unrealistic implications of existing international finance models in which productivity shocks are the sole source of uncertainty. Our model generates a rich set of implications on how stock, bond, and foreign exchange markets co-move. We solve the model in closed-form, which yields a system of equations that can be readily estimated empirically. Our estimation validates the main predictions of the theory.

Relationship Banking, Fragility, and the Asset-Liability Matching Problem

Review of Financial Studies 2007 20(6), 2129-2177
We address a fundamental question in relationship banking: why do banks that make relationship loans finance themselves primarily with core deposits and when would it be optimal to finance such loans with purchased money? We show that not only are relationship loans informationally opaque and illiquid, but they also require the relationship between the bank and the borrower to endure in order for the bank to add value. However, the informational opacity of relationship loans gives rise to endogenous withdrawal risk that makes the bank fragile. Core deposits are an attractive funding source for such loans because the bank provides liquidity services to core depositors and this diminishes the likelihood of premature deposit withdrawal, thereby facilitating the continuity of relationship loans. That is, we show that banks will wish to match the highest value-added liabilities with the highest value-added loans and that doing so simultaneously minimizes the bank's fragility owing to withdrawal risk and maximizes the value the bank adds in relationship lending. We also examine the impact of interbank competition on the bank's asset-liability matching and extract numerous testable predictions.

Liquidity and Expected Returns: Lessons from Emerging Markets

Review of Financial Studies 2007 20(6), 1783-1831 open access
Given the cross-sectional and temporal variation in their liquidity, emerging equity markets provide an ideal setting to examine the impact of liquidity on expected returns. Our main liquidity measure is a transformation of the proportion of zero daily firm returns, averaged over the month. We find that it significantly predicts future returns, whereas alternative measures such as turnover do not. Consistent with liquidity being a priced factor, unexpected liquidity shocks are positively correlated with contemporaneous return shocks and negatively correlated with shocks to the dividend yield. We consider a simple asset-pricing model with liquidity and the market portfolio as risk factors and transaction costs that are proportional to liquidity. The model differentiates between integrated and segmented countries and time periods. Our results suggest that local market liquidity is an important driver of expected returns in emerging markets, and that the liberalization process has not fully eliminated its impact.

Portfolio Performance Manipulation and Manipulation-proof Performance Measures

Review of Financial Studies 2007 20(5), 1503-1546
Over the years numerous portfolio performance measures have been proposed. In general they are designed to capture some particular enhancement that might result from active management. However, if a principal uses a measure to judge an agent, then the agent has an incentive to game the measure. Our paper sh