The current institutional shareholding score of Clean Energy Fuels Corp is 3.00, ranking 68 out of 120 in the Oil & Gas industry. The latest institutional shareholding proportion is 47.87%, representing a quarter-over-quarter decrease of 12.10%. The largest institutional shareholder is James Simons, holding a total of 0.00 shares, representing 0.47% of shares outstanding, with 0.17% increase in holdings.