In theory, an investor can make infinite profits by taking unlimited positions in an arbitrage. In reality, however, investors must satisfy margin requirements which completely change the economics of arbitrage. We derive the optimal investment policy for a risk-averse investor in a market where...

An inherent risk facing investors in financial markets is that a major event may trigger a large abrupt change in stock prices and market volatility. This paper studies the implications of jumps in prices and volatility on investment strategies. Using the event-risk framework of Duffie, Pan, and...

Gallant, Hansen and Tauchen (1990) show how to use conditioning information optimally to construct a sharper unconditional variance bound on pricing kernels. The literature predominantly resorts to a simple, sub-optimal procedure that scales returns with predictive instruments and computes...

We characterize the joint dynamics of expected returns, stochastic volatility, and prices. In particular, with a given dividend process, one of the processes of the expected return, the stock volatility, or the price-dividend ratio fully determines the other two. For example, the stock...

Many firms have stockholders who face severe restrictions on their ability to sell their shares and diversify the risk of their personal wealth. We study the costs of these liquidity restrictions on stockholders using a continuous-time portfolio choice framework. The economic cost of these...

We study the consumption-investment problem of a CRRA agent who possesses private information about the future prospects of a stock. We compute the value of the information to the agent by comparing the utility equivalent with and without the information of the agent. The value of private of...

We investigate the effects of information and diversification on cost of capital in a noisy rational expectations model. Assuming a factor structure for risky asset payoffs and two classes of investors, informed and uninformed, we show that in large economies the APT (Ross, 1976) holds and i)...

This paper studies the market price of credit risk incorporated into one of the most important credit spreads in the financial markets: interestrate swap spreads. Our approach consists of jointly modeling the swap and Treasury term structures using a four-factor affine credit framework and...

We study how the market prices the default and liquidity risks incorporated into one of the most important credit spreads in the financial markets–interest rate swap spreads. Our approach consists of jointly modeling the Treasury, repo, and swap term structures using a general five-factor...

This paper studies the valuation of assets with debt tax shields when debt policy is a general time-dependent function of the asset’s unlevered cash flows, value, and history. In a continuous-time setting, it shows that the value of a project’s debt tax shield satisfies a partial...