| 1 | VLTO | Veralto Corporation | 23.31B | -0.29% | 1,526,808 | 5.50B |
| 2 | ZWS | Zurn Elkay Water Solutions Corporation | 7.89B | -0.21% | 904,246 | 1.70B |
| 3 | FSS | Federal Signal Corporation | 6.47B | -2.37% | 602,093 | 2.18B |
| 4 | CECO | CECO Environmental Corp. | 1.83B | -2.19% | 733,929 | 774.38M |
| 5 | PCT | PureCycle Technologies, Inc. | 1.06B | -3.45% | 4,180,133 | 8.36M |
| 6 | ERII | Energy Recovery, Inc. | 587.45M | 4.81% | 1,763,072 | 134.99M |
| 7 | ADUR | Aduro Clean Technologies Inc. | 367.59M | 0.73% | 155,699 | 218.51K |
| 8 | ARQ | Arq, Inc. | 136.62M | -0.31% | 693,946 | 117.95M |
| 9 | ZONE | CleanCore Solutions, Inc. | 66.20M | 4.49% | 2,448,303 | 3.42M |
| 10 | BCHT | Birchtech Corp. | 59.64M | -1.28% | 63,773 | 19.40M |
| 11 | SCWO | 374Water Inc. | 42.65M | 0.40% | 52,712 | 1.91M |
| 12 | FTEK | Fuel Tech, Inc. | 37.77M | - | 649,011 | 26.68M |
| 13 | CLIR | ClearSign Technologies Corporation | 28.74M | 0.11% | 35,793 | 2.15M |
| 14 | RAIN | Rain Enhancement Technologies Holdco, Inc. | 21.32M | 0.36% | 6,151 | - |
| 15 | LIQT | LiqTech International, Inc. | 14.62M | 3.52% | 11,335 | 16.51M |
| 16 | TOMZ | TOMI Environmental Solutions, Inc. | 13.20M | -0.09% | 44,643 | 5.69M |
| 17 | CLWT | Euro Tech Holdings Company Limited | 9.96M | -4.35% | 6,903 | 14.01M |
| 18 | DEVS | DevvStream Corp. | 3.52M | -1.11% | 44,982 | 26.89K |
