The market took an unexpected turn this afternoon, catching investors off-guard. As the VN-Index soared to a 3.72% gain, a sudden wave of selling hit, sending the index plunging. In just under 30 minutes, the index dropped 0.6%, resulting in a staggering 4.34% swing. Today's trading volume on the HoSE exchange surged to a new record high of 72,841 billion VND, surpassing the previous record set on July 29.