We analyze the trading of corporate insiders at leading financial institutions during the 2007 to 2009 financial crisis. We find strong evidence of a relation between political connections and informed trading during the period in which TARP funds were disbursed, and that the relation is most...

The persistent dominance of Facebook has led many scholars and policymakers to generateproposals to invigorate competition in social networking. In this piece we address a remedy thathas received renewed attention: interoperability. Prior proposals of interoperability have focusedon eroding...

Our societies are heterogeneous in many dimensions such as census, education, religion, ethnic and cultural composition. The links between individuals - e.g. by friendship, marriage or collaboration - are not evenly distributed, but rather tend to be concentrated within the same group. This...