Clean Energy Fuels Corp. (NASDAQ: CLNE) exhibits moderately high stock price volatility, a characteristic common among small-cap alternative energy equities and clean-tech growth enterprises. Its shares frequently experience sharp intraday percentage swings, wide 52-week trading ranges, and sensitivity to macroeconomic trends, government clean energy incentives, and quarterly financial updates. Investors tracking CLNE must be prepared for short-term price fluctuations that often exceed broader market indices.