| Code | Name | High | Low | Close | Volume | Change |
| MAR010 | MAR 15/07/13 00.00% MARAC | 8.900 | 8.900 | 8.900 | 10,000 | 0.000 |  | 0.00 |
| MCB010 | GTR 07/09/2011 8.20% Generator | 18.00 | 18.00 | 18.00 | 0 | 0.00 |  | 0.00 |
| MCH | Mr Chips Holdings Ordinary Shares | 2.740 | 2.740 | 2.740 | 0 | 0.000 |  | 0.00 |
| MCK | Millennium & Copthorne Hotels NZ | 0.5300 | 0.5300 | 0.5300 | 0 | 0.0000 |  | 0.00 |
| MDZ | The NZ Mid-Cap Index Fund (NS) Units | 2.200 | 2.170 | 2.170 | 36,678 | 0.030 |  | 1.36 |
| MET | Metlifegroup Ordinary Shares | 3.500 | 3.500 | 3.500 | 790 | 0.050 |  | 1.41 |
| MFN | MFS New Zealand Limited Ordinary Shares | 1.100 | 1.100 | 1.100 | 0 | 0.000 |  | 0.00 |
| MFT | Mainfreight Ordinary Shares | 4.550 | 4.320 | 4.320 | 45,310 | 0.130 |  | 2.92 |
| MHI | Michael Hill | 0.6200 | 0.5800 | 0.5800 | 64,090 | 0.0400 |  | 6.45 |
| MLN | Marlin Global Limited Ordinary Shares | 0.5200 | 0.5100 | 0.5100 | 56,071 | 0.0300 |  | 5.56 |
| MLNWA | Marlin Global Limited 31/10/10 $1.00 | 0.0700 | 0.0600 | 0.0600 | 36,500 | 0.0100 |  | 14.29 |
| MOW | Mowbray Collectables Limited NC | 1.250 | 1.250 | 1.250 | 0 | 0.000 |  | 0.00 |
| MTFHC | MTF 00/00/00 9.75% - Motor Trade | 68.00 | 68.00 | 68.00 | 0 | 0.00 |  | 0.00 |
| MTG | Media Technology Group | 0.0400 | 0.0400 | 0.0400 | 0 | 0.0000 |  | 0.00 |
| MVN | Methven Limited Ordianry Shares | 1.300 | 1.250 | 1.250 | 326,491 | 0.050 |  | 3.85 |
| MZY | SmartMOZY | 4.150 | 3.750 | 3.750 | 9,096 | 0.250 |  | 6.25 |