First, it depends on how risky your portfolio is at present. Do you have a lot of high 'beta' names - then you might be in for a bumpy short term road. If you own energy companies, you'll see some deep red in your portfolio as well. However, I do believe it's a long term buying opportunity. The world is still expanding in population and oil is a finite resource - so the price must go up in the long run. Stay with stocks if your time horizon is 10+ years - don't blink.