The strategy of simply holding stocks of high momentum, high trailing returns, is amazing for the amount of support that it has gotten from normally skeptical academics. But in practice there have been flies in the ointment. Unhedged pure momentum didn't help at all with the 2007--2008 Lehman...

This is a (B) case for AQR's Momentum Funds. It follows the first year of performance of the funds after launching, and gives students a critical inflection point for analyzing the nascent stages of a new product launch and the potential path dependence of the product depending on initial...

AQR is a hedge fund based in Greenwich, Connecticut, that is considering offering a wholly new line of product to retail investors, namely the ability to invest in the price phenomenon known as momentum. There is a large body of empirical evidence supporting momentum across many different asset...

Identifying outperforming mutual funds ex-ante is a notoriously difficult task. We use machine learning to exploit fund characteristics and construct portfolios of equity funds that earn positive and significant out-of-sample alpha net of all costs. In contrast, alphas of portfolios selected...

This paper explores the role mutual fund herding plays on the return comovement in Chinese stocks. The results show that mutual fund herding significantly reduces the return comovement among Chinese stocks, providing evidence for the existence of a rational herding behavior by mutual funds. We...