Previous experimental research has shown that thin financial markets fail to fully equilibrate, in contrast with thick markets. A specific type of market risk is conjectured to be the reason, namely, the risk of partial execution of desired portfolio rearrangements in a system of parallel,...

We report on six large-scale nancial markets experiments that were designed to test two of the most basic propositions of modern asset pricing theory, namely, that the interaction between risk averse agents in a competitive market leads to equilibration, and that, in equilibrium, risk premia are...

In an efficient securities market, prices correctly re ect news about future payoffs. This paper argues that there are two aspects to correctness: (i) correct updating of beliefs from news, (ii) correct prior beliefs. Traditionally, empirical research has implicitly insisted on both. Lucas'...

Efficiency in the IPO (Initial Public Offering) aftermarket is tested without imposing any restrictions on the priors about potential default at the issue date. Merging Ritter's extended dataset (which covers the period 1975-84) with the CRSP tapes, IPOs are followed up to ten years after issue....