Underlying Index Performance: RILA.US's price heavily depends on the performance of the Russell 1000 index, which it tracks.

Market Sentiment: Overall investor confidence and risk appetite impact demand for ETFs like RILA.US.

Interest Rates: Changes in interest rates can influence investor preferences and relative attractiveness of RILA.US.

Economic Indicators: Key economic data like GDP growth, inflation, and unemployment can affect the Russell 1000 and RILA.US's price.

Sector Performance: The performance of sectors within the Russell 1000 influences RILA.US, as its holdings reflect the index composition.

ETF Supply and Demand: Imbalances in the supply of and demand for RILA.US shares can affect its market price.

Expense Ratio: While not directly affecting daily price fluctuations, RILA.US's expense ratio impacts its long-term returns and relative attractiveness.

Trading Volume: High trading volume typically indicates greater liquidity and tighter bid-ask spreads, making it easier to trade RILA.US.

Currency Fluctuations: For international investors, currency exchange rates can affect the value of RILA.US in their local currency.

Rebalancing and Reconstitution: Changes to the Russell 1000 index, such as rebalancing or reconstitution, can lead to adjustments in RILA.US's holdings and price.