Underlying Asset Performance: HSUN.US aims to track the Solactive Hong Kong Technology Index. The index constituents' performance directly impacts the ETF's price. Positive stock returns drive the ETF higher; negative returns, lower.

Supply and Demand: Increased investor demand for HSUN.US shares pushes the price up, while increased selling pressure lowers it. This is influenced by broader market sentiment and investor appetite for Hong Kong technology stocks.

Currency Fluctuations: As HSUN.US invests in Hong Kong-listed companies, fluctuations in the exchange rate between the US dollar and the Hong Kong dollar can impact returns for US investors, thereby affecting the ETF's price.

Expense Ratio and Tracking Error: HSUN.US has an expense ratio. Higher expenses reduce returns. Tracking error, the difference between the ETF's performance and the index's performance, also impacts the ETF's appeal and price.

Geopolitical and Economic Factors: Events impacting Hong Kong and China's economies and political stability influence investor confidence and, consequently, the Hong Kong stock market and HSUN.US's price.