Underlying Index Performance: QDVB.XETRA tracks a specific index, so the index's movements directly impact its price. If the index rises, the ETF's price typically rises, and vice versa. Supply and Demand: Basic economic principles apply. Higher demand than supply drives prices up, while increased supply compared to demand causes prices to fall. Investor Sentiment: Overall market optimism or pessimism affects ETF prices. Positive sentiment can increase investment and drive prices up, while negative sentiment can lead to selling and price decreases. Currency Exchange Rates: Since QDVB.XETRA is traded in Euros, fluctuations in exchange rates between the Euro and currencies of the underlying assets can influence its price. Dividend Distributions: Dividends paid by companies within the index and subsequently distributed by the ETF can impact the ETF's price, generally causing a slight decrease upon distribution. Expense Ratio: The ETF's operating costs, reflected in the expense ratio, can subtly affect its price over time, potentially leading to slightly lower returns compared to the underlying index.