Issuer Performance: BlackRock's performance managing the iShares Core MSCI World UCITS ETF impacts investor confidence.

Global Market Trends: Broad market movements, especially in developed economies, influence the ETF's value due to its wide diversification.

Interest Rates: Changes in global interest rates can affect investor appetite for equities versus fixed income assets.

Economic Data: Macroeconomic indicators like GDP growth, inflation, and employment figures in major economies impact market sentiment.

Currency Fluctuations: Exchange rate changes between the Euro (base currency) and underlying assets' currencies influence returns.

Investor Sentiment: Overall market optimism or pessimism drives buying and selling pressure, impacting the ETF's price.

Supply and Demand: The ETF's price reflects supply and demand dynamics in the market, influenced by trading activity.

Sector Performance: Performance of sectors represented within the MSCI World index (e.g., technology, financials) affects IY4.BE.

Geopolitical Events: Political instability or major geopolitical events can cause market volatility and impact ETF prices.