Implementation shortfall, whether from trading costs, discontinuous trading, or other frictions, erodes the performance of any investment strategy. These frictions, along with asset management fees, are the main sources of the sometimes-vast gap between live results and paper portfolio...

Using a dataset of $17 trillion of assets under management, we document that actively-managed institutional accounts outperformed strategy benchmarks by 86 (42) basis points gross (net) during 2000-2012. In return, asset managers collected $162 billion in fees per year for managing 29% of...

Using data spanning the 20th century, we show that most accounting-based return anomalies are spurious. When examined out-of-sample by moving either backward or forward in time, anomalies' average returns decrease, and volatilities and correlations with other anomalies increase. The...

This paper shows individuals' product market choices influence their investment decisions. Using microdata from the brokerage and automotive industries, we find a strong positive relation between customer relationship, ownership of a company, and size of the ownership stake. Investors also are...

Classical approaches to estimation and decisions requiring estimation often are at odds. When values critical to the decision are convex or concave functions of unknown parameters, the statistician's estimation error adjustments are the opposite of what is appropriate for the decision. We...

Residual momentum strategies earn significant alphas. The common interpretation for this result - that momentum resides in firm-specific returns - is unwarranted: even in the absence of firm-specific momentum, a strategy sorted on residuals is profitable because it is also a bet against betas. A...