Standard economic models assume that many small investors own firms. This is so in most large U.S. firms, but wealthy individuals or families generally hold controlling blocks in smaller U.S. firms and in all firms in most other countries. Given this, the lack of theoretical and empirical work...

Financial models are an inescapable feature of modern financial markets. Yet it was over reliance on these models and the failure to test them properly that is now widely recognized as one of the main causes of the financial crisis of 2007-2011. Since this crisis, there has been an increase in...