| 1 | VLTO | Veralto Corporation | 21.24B | -0.77% | 1,180,821 | 5.50B |
| 2 | ZWS | Zurn Elkay Water Solutions Corporation | 8.65B | -1.84% | 394,307 | 1.74B |
| 3 | FSS | Federal Signal Corporation | 6.80B | -3.42% | 189,096 | 2.18B |
| 4 | CECO | CECO Environmental Corp. | 2.68B | 14.97% | 1,612,330 | 803.60M |
| 5 | PCT | PureCycle Technologies, Inc. | 1.29B | -2.20% | 1,679,299 | 8.36M |
| 6 | ERII | Energy Recovery, Inc. | 585.34M | 0.27% | 426,206 | 134.99M |
| 7 | ADUR | Aduro Clean Technologies Inc. | 418.04M | -3.64% | 159,590 | 177.37K |
| 8 | ARQ | Arq, Inc. | 97.48M | -0.22% | 140,411 | 120.34M |
| 9 | ZONE | CleanCore Solutions, Inc. | 62.96M | 1.70% | 1,121,210 | 3.42M |
| 10 | SCWO | 374Water Inc. | 49.97M | -0.17% | 26,175 | 215.04K |
| 11 | FTEK | Fuel Tech, Inc. | 44.87M | 5.11% | 1,090,339 | 26.68M |
| 12 | BCHT | Birchtech Corp. | 41.04M | -1.89% | 47,143 | 17.63M |
| 13 | CLIR | ClearSign Technologies Corporation | 29.21M | 3.25% | 8,782 | 5.23M |
| 14 | LIQT | LiqTech International, Inc. | 21.98M | 1.84% | 22,811 | 16.51M |
| 15 | RAIN | Rain Enhancement Technologies Holdco, Inc. | 18.59M | -1.39% | 5,272 | - |
| 16 | TOMZ | TOMI Environmental Solutions, Inc. | 13.37M | -5.82% | 422,008 | 5.64M |
| 17 | CLWT | Euro Tech Holdings Company Limited | 9.31M | -2.29% | 210 | 14.01M |
| 18 | DEVS | DevvStream Corp. | 1.57M | -1.77% | 162,677 | 33.94K |