| 1 | VLTO | Veralto Corporation | 22.34B | 0.49% | 2,059,773 | 5.50B |
| 2 | ZWS | Zurn Elkay Water Solutions Corporation | 8.00B | 2.67% | 3,434,729 | 1.70B |
| 3 | FSS | Federal Signal Corporation | 6.96B | 3.47% | 770,312 | 2.18B |
| 4 | CECO | CECO Environmental Corp. | 2.33B | 2.00% | 196,425 | 774.38M |
| 5 | PCT | PureCycle Technologies, Inc. | 1.22B | -0.73% | 4,247,564 | 8.36M |
| 6 | ERII | Energy Recovery, Inc. | 558.93M | 1.24% | 1,744,863 | 134.99M |
| 7 | ADUR | Aduro Clean Technologies Inc. | 379.93M | -2.09% | 247,150 | 177.37K |
| 8 | ARQ | Arq, Inc. | 95.55M | -1.76% | 457,867 | 120.34M |
| 9 | ZONE | CleanCore Solutions, Inc. | 65.69M | -3.73% | 5,555,599 | 3.42M |
| 10 | SCWO | 374Water Inc. | 54.77M | -4.56% | 32,176 | 215.04K |
| 11 | BCHT | Birchtech Corp. | 42.62M | -3.57% | 76,640 | 17.63M |
| 12 | FTEK | Fuel Tech, Inc. | 41.46M | - | 90,917 | 26.68M |
| 13 | CLIR | ClearSign Technologies Corporation | 29.48M | 2.25% | 21,222 | 5.23M |
| 14 | LIQT | LiqTech International, Inc. | 18.45M | 1.92% | 3,152 | 16.51M |
| 15 | RAIN | Rain Enhancement Technologies Holdco, Inc. | 17.22M | -0.44% | 11,001 | - |
| 16 | TOMZ | TOMI Environmental Solutions, Inc. | 12.02M | -0.29% | 13,596 | 5.64M |
| 17 | CLWT | Euro Tech Holdings Company Limited | 9.28M | -3.70% | 324 | 14.01M |
| 18 | DEVS | DevvStream Corp. | 3.06M | -16.90% | 812,773 | 33.94K |
