| 1 | VLTO | Veralto Corporation | 21.02B | -1.78% | 2,775,099 | 5.50B |
| 2 | ZWS | Zurn Elkay Water Solutions Corporation | 8.70B | -1.27% | 593,777 | 1.74B |
| 3 | FSS | Federal Signal Corporation | 6.80B | -3.39% | 381,377 | 2.18B |
| 4 | CECO | CECO Environmental Corp. | 2.67B | 14.43% | 2,691,544 | 803.60M |
| 5 | PCT | PureCycle Technologies, Inc. | 1.28B | -2.61% | 2,347,827 | 8.36M |
| 6 | ERII | Energy Recovery, Inc. | 585.87M | 0.36% | 633,938 | 134.99M |
| 7 | ADUR | Aduro Clean Technologies Inc. | 418.04M | -3.27% | 191,911 | 177.37K |
| 8 | ARQ | Arq, Inc. | 97.27M | -0.44% | 177,245 | 120.34M |
| 9 | ZONE | CleanCore Solutions, Inc. | 62.28M | 0.61% | 1,135,607 | 3.42M |
| 10 | SCWO | 374Water Inc. | 49.36M | -1.39% | 32,462 | 215.04K |
| 11 | FTEK | Fuel Tech, Inc. | 48.29M | 13.14% | 1,328,646 | 26.68M |
| 12 | BCHT | Birchtech Corp. | 38.93M | -6.92% | 90,979 | 17.63M |
| 13 | CLIR | ClearSign Technologies Corporation | 28.99M | 2.49% | 9,438 | 5.23M |
| 14 | LIQT | LiqTech International, Inc. | 22.08M | 2.30% | 23,197 | 16.51M |
| 15 | RAIN | Rain Enhancement Technologies Holdco, Inc. | 18.54M | -1.67% | 8,828 | - |
| 16 | TOMZ | TOMI Environmental Solutions, Inc. | 13.58M | -4.36% | 439,378 | 5.64M |
| 17 | CLWT | Euro Tech Holdings Company Limited | 9.31M | -2.37% | 238 | 14.01M |
| 18 | DEVS | DevvStream Corp. | 1.60M | - | 169,192 | 33.94K |
