This Article argues that the rise of algorithmic trading undermines efficient capital allocation in securities markets. It is a bedrock assumption in theory that securities prices reveal how effectively public companies utilize capital. This conventional wisdom rests on the straightforward...

This Article argues that the rise of algorithmic trading profoundly challenges the foundation on which much of today's securities regulation framework rests: the understanding that securities' prices objectively reflect available information in the market. The Efficient Capital Markets...

We propose a parsimonious agent-based model of a financial market at the intra-day time scale that is able to jointly reproduce many of the empirically validated stylised facts. These include properties related to returns (leptokurtosis, absence of linear autocorrelation, volatility clustering),...