The stock market can trap investors who get either too long or too short on a specific company or trend. Whenever this happens, the market has a way of correcting these imbalances through sharp rotations. Those who are too long on a stock or trend and see a sharp selloff will likely run for the exit, creating additional selling pressure on the trend.The inverse is also true for short sellers. When too many people—and too much capital—go on the short side, any time there is a sharp rally, these short sellers ...