This topic has addressed in various threads, but I thought that today is a good day to start this thread. At the time of writing the S&P 500 is at 1,148 or so and WTI crude at $83 or so. The two have experienced a strong positive correlation for the past 12 months. If risk appetite continues to improve, then it's reasonable to expect both US equities and oil to continue to rise. However at some point a "high" oil price will hurt the real economy, and/or hurt equity valuations. What do you think that "high" oil price is? $90? $100?