Close data update at 1/22/2021
| Company | % | Close | Open | Low | Volume | Volumi |
| Mailup | -2.32% | 4.64 | 4.77 | 4.5 | 4.8 | 25,356 |
| Maire Tecnimont | -3.84% | 1.903 | 1.963 | 1.871 | 1.979 | 2,898,981 |
| Maps | UNC. | 2.24 | 2.26 | 2.24 | 2.26 | 12,000 |
| Marr | -3.15% | 16.62 | 17.18 | 16.44 | 17.18 | 139,271 |
| Marzocchi Pompe | -2.11% | 2.78 | 2.86 | 2.78 | 2.86 | 3,500 |
| Masi Agricola | -2.58% | 2.64 | 2.73 | 2.58 | 2.76 | 77,736 |
| Massimo Zanetti Beverage | UNC. | 5.48 | 5.48 | 5.48 | 5.48 | 2,270 |
| Matica Fintec | +1.49% | 1.228 | 1.202 | 1.2 | 1.228 | 10,800 |
| Mediaset | -2.14% | 2.102 | 2.148 | 2.096 | 2.15 | 1,609,851 |
| Mediobanca | +0.08% | 7.412 | 7.35 | 7.244 | 7.426 | 4,676,954 |
| Merck | +0.21% | 140.95 | 139.45 | 138.65 | 140.95 | 80 |
| Micron Technology | +0.12% | 68.45 | 68.86 | 68.45 | 69.74 | 569 |
| Microsoft Corp | +1.51% | 188.06 | 185.86 | 184.34 | 188.78 | 2,293 |
| Mit Sim | UNC. | 6.9 | --- | --- | --- | --- |
| Mittel | -1.44% | 1.37 | 1.37 | 1.37 | 1.37 | 13,500 |
| Moncler | -1.86% | 48.67 | 49.5 | 48.24 | 49.57 | 592,520 |
| Mondadori | -1.55% | 1.4 | 1.422 | 1.324 | 1.426 | 292,068 |
| Mondo Tv | +0.32% | 1.266 | 1.262 | 1.242 | 1.276 | 224,328 |
| Mondo Tv France | -0.68% | 0.029 | 0.029 | 0.029 | 0.029 | 117,000 |
| Mondo Tv Suisse | +3.50% | 0.768 | 0.768 | 0.746 | 0.768 | 1,600 |
| Monnalisa | +2.41% | 3.4 | 3.26 | 3.14 | 3.4 | 9,047 |
| Monrif | -0.78% | 0.076 | 0.076 | 0.076 | 0.076 | 48,367 |
| Munich Re | -1.37% | 230.8 | 230.3 | 229.8 | 231.2 | 484 |
| Mutuionline | -2.37% | 33 | 33.35 | 32.65 | 33.65 | 22,631 |
