Supply and Demand: Increased demand raises the price, increased supply lowers it.

Index Performance: XD9E.XETRA tracks a specific index. The ETF's price closely mirrors the performance of that index. If the index goes up, so does the ETF, and vice versa.

Underlying Assets: The value of the securities held within the ETF directly influences its price. Changes in the value of these holdings will impact the ETF's overall value.

Market Sentiment: Overall investor confidence and risk appetite can significantly impact ETF prices. Positive sentiment drives prices up, while negative sentiment can cause them to fall.

Currency Fluctuations: If the underlying assets are denominated in a different currency, exchange rate changes can affect the ETF's price.

Expense Ratio: While not directly setting the price, the ETF's expense ratio reduces returns, impacting long-term price performance relative to the underlying index.

Trading Volume and Liquidity: Higher trading volume and liquidity usually lead to tighter bid-ask spreads and more efficient price discovery.

Interest Rates: Changes in interest rates can affect the valuation of some of the underlying assets, especially bonds, which can indirectly influence the ETF's price.