Asset Management

Using proprietary data on millions of trades by retail investors, we provide the first large-scale evidence that retail short selling predicts negative stock returns. A portfolio that mimics weekly retail shorting earns an annualized risk-adjusted return of 9%. The predictive ability of retail short selling lasts for one year and is not subsumed by institutional short selling. In contrast to institutional shorting, retail shorting best predicts returns in small stocks and those that are heavily bought by other retail investors.

We demonstrate a novel link between relationship-specific investments and risk in a setting where division managers operate under moral hazard and collaborate on joint projects. Specific investments increase efficiency at the margin. This expands the scale of operations and thereby adds to the compensation risk borne by the managers. Accounting for this investment/risk link overturns key findings from prior incomplete contracting studies.

We explore captain-ownership and vessel performance in eighteenth-century transatlantic shipping. Although contingent compensation often aligned incentives between captains and ship owners, one difficult-to-contract hazard was threat of capture during wartime. We exploit variation across time and routes to study the relationship between capture threat and captain-ownership. Vessels were more likely to have captain-owners when undertaking wartime voyages on routes susceptible to privateers.

The incentive contracts of delegated investment managers may have unintended negative consequences for asset prices. I show that managers who are compensated for relative performance optimally shift their portfolio weights towards those of the benchmark when volatility rises, putting downward price pressure on overweight stocks and upward pressure on underweight stocks. In quarters when volatility rises most (top quintile), a portfolio of aggregate-underweight minus aggregate-overweight stocks returns 3% to 8% per quarter depending on the risk adjustment.

We introduce a tractable dynamic monitoring technology into a continuous-time moral hazard problem and study the optimal long-term contract between principal and agent. Monitoring adds value by allowing the principal to reduce the intensity of performance-based incentives, reducing the likelihood of costly termination. We present a novel characterization of optimal dynamic incentive provision when performance-based incentives may decline continuously to zero. Termination happens in equilibrium only if its costs are relatively low.

We would like to share some of our general observations on activism, economics and the macro environment.

This paper explores the quantitative asset-pricing implications of expectations-based reference-dependent preferences, as introduced by Koszegi and Rabin, in an otherwise traditional Lucas-tree m model. I find that the model easily succeeds in matching the historical equity premium and its variability when the preference parameters are calibrated in line with micro evidence. The equity premium is high because expectations-based loss aversion makes uncertain fluctuations in consumption more painful.