Asset Allocation: RFLR.US's price heavily relies on the performance of its underlying assets, predominantly US large-cap stocks exhibiting high free cash flow. Positive company results boost its price.

Market Sentiment: Overall investor confidence and risk appetite affect demand for RFLR.US. Bull markets usually lift prices, while fear can cause declines.

Economic Indicators: Key data like GDP growth, inflation, and interest rates influence RFLR.US through their effect on constituent companies' profitability and investor expectations.

Fund Flows: Large inflows indicate high demand, potentially driving up the ETF's price. Conversely, significant outflows can exert downward pressure.

Management Fees: RFLR.US's expense ratio, while typically low for ETFs, can slightly reduce returns compared to a theoretical, fee-free alternative.

Rebalancing Activity: Changes in the underlying index, requiring the ETF to buy or sell stocks, can create short-term price fluctuations.

Liquidity: Higher trading volume generally leads to tighter bid-ask spreads, reducing transaction costs and potentially improving the ETF's price discovery.

Sector Performance: The performance of sectors heavily represented in the index, like technology or financials, directly affects RFLR.US.

Currency Fluctuations: While RFLR.US primarily holds US assets, currency movements can impact returns for international investors.

Dividend Payments: RFLR.US distributes dividends received from its holdings, impacting its total return but typically not causing large price swings.