With reference to the class of asset pricing models with a market maker and mean-variance optimization of speculative agents, the note seeks to clarify the concepts behind the price adjustment rule, which are often treated somewhat carelessly in this literature. Calling attention to the...

In the fall of 2008, the United States was plunged into a financial crisis more severe than any since the Great Depression. As banks collapsed and the state scrambled to organize one of the largest transfers of wealth in history, manyincluding economists and financial expertswere shocked by the...