share price
And for BP's share price. Though in fact I came to this the other way round: the rise in BP's share price reflects a gradual re-pricing of the risk and damage extent, as well as the more recent news that the new cap-fitting seems to have gone well.
[Update: speaking of political risk - this is the kind of thing I mean -W]
[http://www.bbc.co.uk/news/world-us-canada-10654584]