US Small-Cap Performance: IWM tracks the Russell 2000, so the performance of US small-cap companies significantly impacts its price.

Economic Growth: Strong economic growth generally boosts small-cap performance, driving IWM's price higher.

Interest Rates: Rising interest rates can negatively impact small-caps due to higher borrowing costs, potentially lowering IWM's price.

Inflation: High inflation can erode small-cap profitability, potentially decreasing IWM's price.

Market Sentiment: Overall market optimism or pessimism affects IWM, with positive sentiment generally increasing its price.

Sector Performance: The performance of sectors heavily represented in the Russell 2000 impacts IWM.

Dollar Strength: A weaker dollar can benefit exporters in the Russell 2000, potentially raising IWM's price.

Geopolitical Events: Global events and political instability can create market volatility, impacting IWM's price.

Index Rebalancing: Changes in the Russell 2000 composition can cause short-term price fluctuations in IWM.