We develop a new class of tree-based models (P-Tree) for analyzing (unbalanced) panel data utilizing global (instead of local) split criteria that incorporate economic guidance to guard against overfitting while preserving interpretability. We grow a P-Tree top-down to split the cross section of...

We document that value-to-price, the ratio of Residual-Income-Model-based valuation to market price, subsumes the power of book-to-market ratio and many other value or quality measures in predicting stock returns. Long-short value-to-price portfolios hedge against momentum, revitalize the...

We survey the nascent literature on machine learning in the study of financial markets. We highlight the best examples of what this line of research has to offer and recommend promising directions for future research. This survey is designed for both financial economists interested in grasping...

We study sources and implications of undiversified portfolios in a production-based asset pricing model with financial frictions. Households take concentrated positions in a single firm exposed to idiosyncratic shocks because managerial effort requires equity stakes, and because investors gain...

Do returns in private equity (PE) rise or fall with fund scale? This question is increasingly urgent amid larger funds and new focus on the retail market. Since better managers can raise larger funds, the causal effect is difficult to identify. We develop an instrument based on gifts to...

High volatility and high beta stocks tilt strongly to small, unprofitable, and growth firms. These tilts explain the poor absolute performance of the most aggressive stocks. In conjunction with the well documented inability of the Fama and French three-factor model to price small growth stocks,...

Browser data from an approximately representative sample of individual investors offers a detailed account of their search for information, including how much time they spend on stock research, which stocks they research, what categories of information they seek, and when they gather information...

Using tax filings from 374,351 U.S. nonprofit organizations from 2008 to 2020, we provide the first large-scale analysis of endowment prevalence, function, asset allocation, and returns. Endowment use varies systematically across sectors and revenue models. Organizations with endowments scale...

We find that the price volatility of renewable assets is significantly greater than that of brown assets. Our causal estimates leverage the response of electricity and credit markets to US state-level renewable portfolio standards that require some utilities to use renewables while exempting...

Using a novel dataset of U.S. buyout and VC investments, we study the informativeness of fund managers' interim valuation reports about portfolio companies on final outcomes. We find that when investors assess the performance of individual portfolio companies, they can do better than just...