Dealer banks--that is, large banks that deal in securities and derivatives, such as J. P. Morgan and Goldman Sachs--are of a size and complexity that sharply distinguish them from typical commercial banks. When they fail, as we saw in the global financial crisis, they pose significant risks to...

The Economists' Voice: Top Economists Take On Today's Problems featured a core collection of accessible, timely essays on the challenges facing today's global markets and financial institutions. The Economists' Voice 2.0: The Financial Crisis, Health Care Reform, and More is the next installment...