Over the ten trading days following the announcement of Timothy Geithner as Treasury Secretary, financial firms with a connection to Geithner experienced a cumulative abnormal return of about 12% relative to other financial sector firms. This reversed when his nomination ran into trouble due to unexpected tax issues.
That is what Daron Acemoglu, Simon Johnson, Amir Kermani, James Kwak, and Todd Mitton found recently.
Geithner had important social connections from his time as president of the Federal Reserve Bank of New York. He knew some people in finance very well – including those at large and small firms – but some others he did not know at all. This spike in share prices for connections to Tim Geithner was somewhat special as the authors explain:
when Henry (Hank) Paulson became Treasury Secretary in May 2006 – there is no evidence of a positive impact on the stock price of connected firms.
The argument put forward explaining the value of these connections had nothing to do with any suggestions of impropriety whatsoever. What happened was the value of connections spiked in a crisis such as the global financial crisis in 2008:
it was entirely reasonable for market participants to suppose that immediate action with limited oversight would have to be taken, and that officials would rely on a small network of established confidantes for advice and assistance. In fact, this is exactly what happened while Mr Geithner was at Treasury.
When the going gets tough, the tough only have time to ring friends and associates for advice and new staff.
Utopia, you are standing in it! 
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