Underlying Index Performance: VMID.F tracks the Solactive Vietnam Mid-Cap Index. Therefore, the overall performance of the index directly impacts the ETF's price. Positive index returns typically lead to higher ETF prices, and vice versa. Supply and Demand: Market forces of supply and demand influence VMID.F's price. Higher demand pushes the price up, while increased selling pressure drives it down. Investor Sentiment: General investor sentiment towards Vietnamese mid-cap stocks affects VMID.F. Positive sentiment boosts demand, increasing the price, while negative sentiment can lead to selling and lower prices. Currency Fluctuations: Since VMID.F invests in Vietnamese stocks, fluctuations in the VND/USD exchange rate can impact its price. A stronger VND relative to USD can positively influence returns, while a weaker VND can negatively affect them. Management Fees and Expenses: VMID.F's expense ratio and other management fees reduce its overall return, impacting its price relative to the underlying index.