Link to up-to-date Cleantech Index (CTIUS) composition, weighting, and pricing
As of January 1, 2013
| Symbol | Company | Market Capitalization (USD Millions) | Index Weight | Domicile Country |
| SIE.DE | Siemens | $ 96,249 | 3.091% | Germany |
| ABB.VX | ABB | $ 47,671 | 3.058% | Switzerland |
| SU.PA | Schneider Electric | $ 39,018 | 3.114% | France |
| JCI | Johnson Controls | $ 20,937 | 3.156% | USA |
| GLW | Corning | $ 18,715 | 3.115% | USA |
| SGSN.VX | SGS | $ 16,855 | 3.043% | Switz. |
| ROP | Roper Industries | $ 10,911 | 3.157% | USA |
| DSM.AS | DSM | $ 9,956 | 3.119% | Netherlands |
| ALFA.ST | Alfa-Laval | $ 8,974 | 3.115% | Sweden |
| NZYM-B.CO | Novozymes -B- | $ 8,858 | 3.102% | Denmark |
| BWA | Borg Warner | $ 8,380 | 3.206% | USA |
| ADSK | Autodesk | $ 7,971 | 3.125% | USA |
| TRMB | Trimble Navigation | $ 7,525 | 2.889% | USA |
| PLL | Pall | $ 6,905 | 2.736% | USA |
| ANSS | ANSYS | $ 6,225 | 2.722% | USA |
| XYL | Xylem | $ 5,038 | 2.419% | USA |
| DCI | Donaldson | $ 4,898 | 2.398% | USA |
| CREE | Cree | $ 3,928 | 2.421% | USA |
| 3800.HK | GCL-Poly Energy | $ 3,115 | 2.108% | Hong Kong |
| EDC:PM | Energy Development Corp. | $ 3,083 | 2.144% | Philippines |
| SGL.DE | SGL Carbon SE | $ 2,783 | 2.061% | Germany |
| 6370:JP | Kurita Water Industries | $ 2,762 | 2.064% | Japan |
| HXL | Hexcel | $ 2,704 | 2.097% | USA |
| WWD | Woodward | $ 2,616 | 2.099% | USA |
| CLC | Clarcor | $ 2,403 | 1.878% | USA |
| ERF.PA | Eurofins Scientific | $ 2,322 | 1.881% | Belgium |
| PPO | Polypore International | $ 2,165 | 1.506% | USA |
| KRX.IR | Kingspan Group | $ 1,839 | 1.515% | Ireland |
| ENS | Enersys | $ 1,813 | 1.526% | USA |
| ITRI | Itron | $ 1,758 | 1.364% | USA |
| TTEK | Tetra Tech Inc. | $ 1,683 | 1.375% | USA |
| ARC.AS | Arcadis | $ 1,672 | 1.362% | Netherlands |
| WPT.TO | Westport Innovations | $ 1,466 | 0.678% | Canada |
| TOM.OL | Tomra Systems | $ 1,336 | 1.365% | Norway |
| 6856.T | Horiba Ltd. | $ 1,214 | 1.165% | Japan |
| VWS.CO | Vestas Wind Systems | $ 1,147 | 1.047% | Denmark |
| LNN | Lindsay | $ 1,019 | 1.080% | USA |
| ESE | Esco Technologies | $ 999 | 1.075% | USA |
| POWI | Power Integrations | $ 972 | 1.059% | USA |
| RAVN | Raven Industries | $ 957 | 1.053% | USA |
| AEGN | Aegion | $ 872 | 1.032% | USA |
| 600.SI | Hyflux Ltd. | $ 870 | 0.799% | Singapore |
| BMI | Badger Meter | $ 670 | 0.805% | USA |
| ORA | Ormat Technologies | $ 876 | 0.795% | USA |
| S1A.PA | Saft Groupe | $ 588 | 0.772% | France |
| S92.DE | SMA Solar Technology | $ 870 | 0.758% | Germany |
| FLTX | Fleetmatics Group | $ 897 | 0.839% | Ireland |
| MG | Mistras Group | $ 692 | 0.800% | USA |
| AEIS | Advanced Energy | $ 522 | 0.759% | USA |
| 658.HK | China High Speed Transmission | $ 531 | 0.702% | Hong Kong |
| GAM.MC | Gamesa | $ 542 | 0.631% | Spain |
| 5857.T | Asahi Holdings | $ 542 | 0.706% | Japan |
| GTAT | GT Advanced Technologies | $ 359 | 0.724% | USA |
| MBTN.SW | Meyer Burger Technology | $ 354 | 0.691% | Switzerland |
| AMRC | Ameresco | $ 423 | 0.671% | USA |
| KAI | Kadant | $ 301 | 0.712% | USA |
| FSYS | Fuel Systems Solutions | $ 294 | 0.508% | USA |
| GUR.SW | Gurit Holdings | $ 187 | 0.402% | Switzerland |
| WFI.TO | WaterFurnace Renewable Energy | $ 178 | 0.407% | USA |