| 1 | VLTO | Veralto Corporation | 21.17B | -0.32% | 2,679,254 | 5.59B |
| 2 | ZWS | Zurn Elkay Water Solutions Corporation | 7.98B | 3.13% | 1,282,069 | 1.74B |
| 3 | FSS | Federal Signal Corporation | 6.85B | 2.44% | 347,708 | 2.34B |
| 4 | CECO | CECO Environmental Corp. | 2.92B | 3.79% | 590,902 | 803.60M |
| 5 | PCT | PureCycle Technologies, Inc. | 2.15B | -3.50% | 4,094,142 | 10.90M |
| 6 | ADUR | Aduro Clean Technologies Inc. | 487.14M | 5.52% | 282,819 | 177.37K |
| 7 | ERII | Energy Recovery, Inc. | 445.87M | 2.25% | 916,782 | 136.63M |
| 8 | ZONE | CleanCore Solutions, Inc. | 142.97M | -0.89% | 1,571,770 | 3.41M |
| 9 | ARQ | Arq, Inc. | 108.60M | -0.39% | 152,363 | 122.14M |
| 10 | FTEK | Fuel Tech, Inc. | 45.50M | -1.35% | 296,124 | 26.38M |
| 11 | SCWO | 374Water Inc. | 40.99M | 3.98% | 44,374 | 223.09K |
| 12 | BCHT | Birchtech Corp. | 36.57M | 2.96% | 37,726 | 17.63M |
| 13 | CLIR | ClearSign Technologies Corporation | 26.50M | 6.52% | 16,855 | 5.02M |
| 14 | LIQT | LiqTech International, Inc. | 18.80M | -1.05% | 9,339 | 16.03M |
| 15 | RAIN | Rain Enhancement Technologies Holdco, Inc. | 16.54M | 34.67% | 86,489 | 10.50K |
| 16 | TOMZ | TOMI Environmental Solutions, Inc. | 15.37M | -1.90% | 494,748 | 5.71M |
| 17 | CLWT | Euro Tech Holdings Company Limited | 8.75M | 1.75% | 2,353 | 13.27M |
| 18 | DEVS | DevvStream Corp. | 831.83K | 0.45% | 951,483 | 33.94K |
