| Finanziaria Sviluppo Utilities S.r.l. | Institution | 245.225.565 | 19,11% | 605,71M € | 2025-12-31 |
| Città di Torino | Institution | 179.528.530 | 13,99% | 443,44M € | 2025-12-31 |
| Comune di Reggio Emilia | Institution | 83.519.794 | 6,51% | 206,29M € | 2025-12-31 |
| Metro Holding Torino S.R.L. | Institution | 69.860.015 | 5,44% | 172,55M € | 2025-12-31 |
| Comune di Parma | Institution | 62.806.242 | 4,89% | 155,13M € | 2025-12-31 |
| Compagnia Di San Paolo | Institution | 50.085.858 | 3,90% | 123,71M € | 2025-12-31 |
| Vanguard Capital Management, LLC | Institution | 19.516.529 | 1,52% | 48,21M € | 2026-05-31 |
| Municipality Of La Spezia | Institution | 19.513.971 | 1,52% | 48,20M € | 2025-12-31 |
| Comune di Piacenza | Institution | 17.822.760 | 1,39% | 44,02M € | 2025-12-31 |
| BlackRock, Inc. | Institution | 12.721.581 | 0,99% | 31,42M € | 2026-05-31 |
| Norges Bank Investment Management | Institution | 11.229.063 | 0,88% | 27,74M € | 2025-12-31 |
| State Street Global Advisors, Inc. | Institution | 10.143.398 | 0,79% | 25,05M € | 2026-05-31 |
| Dimensional Fund Advisors LP | Institution | 8.808.405 | 0,69% | 21,76M € | 2026-05-29 |
| Victory Capital Management Inc. | Institution | 5.982.030 | 0,47% | 14,78M € | 2026-03-31 |
| Amundi Asset Management SAS | Institution | 5.953.241 | 0,46% | 14,70M € | 2026-02-27 |
| Vanguard Fiduciary Trust Company | Institution | 5.448.918 | 0,42% | 13,46M € | 2026-05-31 |
| Artemis Investment Management LLP | Institution | 3.800.000 | 0,30% | 9,39M € | 2025-09-30 |
| Allianz Asset Management GmbH | Institution | 3.778.757 | 0,29% | 9,33M € | 2025-12-31 |
| Eurizon Capital SGR SpA | Institution | 2.543.105 | 0,20% | 6,28M € | 2025-12-31 |
| American Century Investment Management Inc | Institution | 2.274.165 | 0,18% | 5,62M € | 2026-05-29 |
| Charles Schwab Investment Management, Inc. | Institution | 2.113.829 | 0,16% | 5,22M € | 2026-05-29 |
| Tortoise Capital Advisors, L.L.C. | Institution | 2.110.810 | 0,16% | 5,21M € | 2025-09-30 |
| Schroder Investment Management Limited | Institution | 1.804.686 | 0,14% | 4,46M € | 2025-12-31 |
| Deutsche Asset & Wealth Management | Institution | 1.572.789 | 0,12% | 3,88M € | 2025-12-31 |
| DNCA Finance | Institution | 1.540.000 | 0,12% | 3,80M € | 2025-12-31 |
| Union Asset Management Holding AG | Institution | 1.340.541 | 0,10% | 3,31M € | 2025-09-30 |
| Fideuram - Intesa Sanpaolo Private Banking Asset Management S.G.R. S.p.A. | Institution | 1.283.609 | 0,10% | 3,17M € | 2025-08-31 |