Over the last decades passive investment products have continuously increased in importance. The efficiency of financial markets is often identified as the main reason for this development. We propose a theoretical framework which reverses the causality by showing that market efficiency might...

This chapter provides a perspective on the rapidly developing literature on investment performance evaluation. I use the stochastic discount factor approach to present and critique current performance measurement techniques in a unified setting. I offer a number of suggestions to improve...

Large-Scale Asset Purchases can impact the price of securities directly, when securities are targeted by the central bank, or indirectly through portfolio re-balancing of private investors. We quantify both the direct and the portfolio re-balancing impact, emphasizing the role of investor...

This paper investigates whether short-term momentum and long-term reversal may emerge from the wealth reallocation process taking place in speculative markets. We assume that there are two classes of investors who trade long-lived assets by holding constantly rebalanced portfolios based on their...

Suppose funds managers are differentiated by intrinsic or innate ability at some origin point in time. Using formal theoretical propositions, and with risk continuously increasing, the continuum of assets available to funds managers is endogenously segmented into continuums of `safe', and...

We use novel data on individual activity in a sports betting market to study the effect of past performance sequences on individual behavior in a real market. The revelation of fundamental values in this market enables us to disentangle whether behavior is caused by sentiment or by superior...