High short interest stocks draw attention for a simple reason. They show where Wall Street's skepticism is concentrated. Short interest measures the percentage of a company's float that has been sold short. When that number climbs, it means a meaningful group of investors expects the stock to fall.
Short interest is only one factor to consider when evaluating a stock's short-term outlook. It's also not an independent variable. That means a stock with high short interest typically needs additional conditions to be met for it to drop. Those conditions might include slowing growth, margin pressure, a shaky macro backdrop, or thin institutional support.
