Underlying Asset Performance: 3DEL mirrors a specific index, so its price is heavily influenced by the performance of the assets within that index. When those assets rise, 3DEL tends to rise, and vice versa.

Supply and Demand: Market forces of supply and demand impact ETF prices. High demand can drive the price above the net asset value, creating a premium, while increased selling pressure can create a discount.

Expense Ratio and Trading Costs: The ETF's expense ratio, and any brokerage commissions or transaction fees associated with buying or selling it, can indirectly affect its attractiveness and overall cost to investors, thus impacting price.

Index Tracking Methodology: The way the ETF replicates its target index can introduce tracking error, where the ETF's performance deviates from the index. Significant tracking error can affect investor confidence and price.

Market Sentiment: Overall investor sentiment towards the market sector or asset class represented by 3DEL can influence its price. Bullish sentiment may drive up demand, while bearish sentiment may lead to sell-offs.

Currency Fluctuations: If the underlying assets are denominated in a different currency, exchange rate fluctuations can impact the ETF's price when converted back to EUR.