We got QE2.......so pretty much nothing including nuclear war matters to the market prices of assets. If Sept. 11th happened during Oct '10 it would have been a 30 minute blip buying opportunity and the markets wouldn't have closed down for days because now the fed "has to" do QE2.
Bring on terrorism, we have QE2 now! Bring on famine, we have QE2 now! Bring on anything, we have QE2 now!