On October 25, 2023, HNX announced the official admission of HIO stock on the UPCoM as follows:
- Issuer: Dong Nai Building Material and Fuel Joint Stock Company
- Stock code: BMF
- Securities type: common stock
- Par value: VND 10,000/share
- Total volume of additional shares registered for trading on UPCoM: 11,688,463 shares
- Total par value of additional shares registered for trading on UPCoM: VND 116,884,630,000.