The Vietnamese stock market indices witnessed a downward trend during the morning session, amid mounting pressures. The VN-Index dipped by 0.23%, shedding 3.14 points to close at 1,363.61. Similarly, the HNX-Index and UPCoM-Index followed suit, with the former declining by 0.06%, a loss of 0.14 points to 227.52, while the latter contracted by 0.25 points or 0.25% to finish at 99.69.