Underlying Index Performance: The XL3S.XETRA ETF price is primarily driven by the performance of the underlying index it tracks. Any fluctuations in that index will directly impact the ETF's value.

Supply and Demand: General market supply and demand for the ETF itself can influence its price. Higher demand often leads to a price increase, while increased selling pressure can cause a decrease.

Interest Rates and Economic Data: Changes in interest rates and broader economic indicators (like inflation or GDP growth) can affect investor sentiment and subsequently impact the ETF's price.

Currency Fluctuations: As XL3S.XETRA is traded on the XETRA exchange, currency exchange rates, especially between the Euro and currencies of assets held within the underlying index, can influence its price.

ETF Management Fees and Expenses: Although typically small, the expense ratio and other management fees associated with the ETF can slightly affect its overall return and therefore its price.

Geopolitical Events: Major global events or political instability can affect market confidence and thus impact the ETF's price, especially if the underlying index has international holdings.