PIECE by MONSTA X (몬스타엑스) has sold 0 copies on streaming services.
PIECE certifications and sales
| Country / region | Sales | Certification / source | Certification date / sales as of |
| Total sales | 0 | Album-equivalent unit |
Total
Sales: 0
Album-equivalent unit
|
Year-end chart performance for PIECE
| Chart 2018 | Rank |
 Japanese Albums (Oricon) |
91 |