We develop closed-form expressions for the path and speed of stock price discovery in a utility-based CAPM with wealth effects. Two investors with uniquely bounded risk-preferences always apply opposite portfolio rebalancing trades. These trades determine the intra-period path and speed of price...

Bubbles are defined in this paper as a temporary period of asset mispricing during which prices diverge from Rational Expectations Equilibrium (REE) for a period that is too long to be justified by random mispricing about a fixed mean rate of return. We solve for the market price of the risky...

Bubbles are generally considered the outcome of investor irrationality or informational asymmetry, both objectionable in efficient markets with rational investors. We introduce an Intertemporal-CAPM with market clearing between high- and low-risk-averse rational investors who learn the CAPM...

Mean and variance of daily type A and B stock returns in Shanghai and Shenzhen exchanges are studied before and after these stocks were subject to a ± 10% daily return limit, and when investors' clientele were segmented, vs. merged. We find that imposing the ± 10% return limit significantly...

We compare changes of mean and variance of returns as two regulations have changed between 1992 and 2007 in the Chinese exchanges of Shanghai and Shenzhen. Specifically, we compare the implementation of a ±10% daily return limit vs. the absence of any limit, and the effect of allowing local and...

Trend-chasing and Contrarian are well-documented empirical trading patterns that the literature generally attributes to behavioral biases. In contrast, we argue that both are rational portfolio rebalancing strategies in a dynamic asset allocation framework. Analyzing the interactions between...