Fund Performance: The underlying performance of the companies held within the IY4.MU ETF directly impacts its price. Stronger company earnings often lead to higher stock prices.

Sector Trends: The overall health and investor sentiment towards the sectors represented in IY4.MU (e.g., technology, financials) influence demand and therefore the ETF's price.

Interest Rates: Changes in interest rates can affect the valuation of companies, particularly those in sectors sensitive to borrowing costs, thus impacting IY4.MU.

Market Sentiment: Broad market optimism or pessimism plays a significant role. Positive market sentiment can drive increased investment in ETFs like IY4.MU.

Currency Fluctuations: As IY4.MU may hold international assets, exchange rate movements between the local currency and those assets can affect its value.

ETF Supply & Demand: The relative demand for and supply of IY4.MU shares in the market impacts its price. Higher demand relative to supply pushes the price up.

Economic Data: Key economic indicators such as GDP growth, inflation, and unemployment rates can influence investor confidence and impact the price of IY4.MU.

Geopolitical Events: Global political events and economic uncertainties can create market volatility and affect investment decisions, influencing the ETF's price.