Talk about reputational risk: On the heels of the Napolitano press conference, in which the Homeland Secretary said the Deepwater Horizon spill in the Gulf of Mexico was of "national significance," energy stocks have come off their highs, and several are in negative territory.

The total costs are not at all clear. I have seen estimates of $500 million, but Credit Suisse this morning cited insurance estimates that total damages could top $1.25 billion.