I have been working with Qing Ye and Clive Walker on a paper which looks at the effect of the media on financial markets in nineteenth-century London. The main finding of our paper is that there is a media discount which appears after the emergence of arm's-length ownership and increased market participation. This suggests that diffuse ownership may be a prerequisite for the media effect. Our findings help explain why the media appears to have little effect on present-day developing country financial markets. The working paper is available at the QUCEH website.
Daron Acemoglu, Simon Johnson, Amir Kermani, James Kwak and Todd Mitton have written a paper on whether firms connected to Timothy Geithner benefited from these connections. They do so by looking at how stocks of these firms reacted to the announcement that he was a nominee for Treasury Secretary in November 2008. They find that there were large abnormal returns for connected firms. Below is the paper's abstract and the full paper is available here . The announcement of Timothy Geithner as nominee for Treasury Secretary in November 2008 produced a cumulative abnormal return for financial firms with which he had a connection. This return was about 6% after the first full day of trading and about 12% after ten trading days. There were subsequently abnormal negative returns for connected firms when news broke that Geithner's confirmation might be derailed by tax issues. Excess returns for connected firms may reflect the perceived impact of relying on the advice of a small ne...