Fund Holdings Performance: ERTH.PA's price is directly influenced by the collective performance of the companies it holds, primarily those focused on water sustainability.

Supply and Demand: Market demand for ERTH.PA relative to its supply dictates its price. Higher demand generally leads to price increases, and vice versa.

Investor Sentiment: Overall market sentiment toward environmental sustainability and ESG investing can impact demand for ERTH.PA.

Expense Ratio: The ETF's expense ratio, although a smaller factor, affects its net return and perceived value compared to similar ETFs.

Index Tracking: The accuracy with which ERTH.PA tracks its underlying index influences investor confidence and its perceived value.

Currency Fluctuations: Changes in the EUR/USD exchange rate, as ERTH.PA is denominated in EUR, will impact the fund's value for USD-based investors.

Interest Rates: Broader economic factors, such as interest rate changes, can impact overall investor appetite for ETFs, including ERTH.PA.