Fundamental Index Performance: DFE tracks an index weighting stocks by fundamental factors like sales, cash flow, and dividends. The overall financial health and performance of these fundamentally strong companies significantly impacts DFE's price.

Sector Allocation: DFE's sector exposure influences price. If its heavily weighted sectors perform poorly due to economic downturns or industry-specific issues, DFE's value will likely decline.

Dividend Yield and Payouts: DFE often emphasizes dividend-paying companies. Changes in dividend policies or the overall dividend yield of its holdings can affect investor demand and price.

Market Sentiment: General market optimism or pessimism, risk appetite, and investor confidence can drive demand for DFE, irrespective of underlying fundamentals, temporarily impacting its price.

Expense Ratio and Tracking Error: DFE's expense ratio and how well it tracks its underlying index affect its attractiveness. Higher expenses or significant tracking errors can make it less desirable, impacting demand and price.

Supply and Demand for ETF Shares: The basic principle of supply and demand applies. If there is more demand for DFE shares than supply, the price will increase, and vice versa.

Interest Rates and Inflation: Rising interest rates can make bonds more attractive, potentially reducing demand for dividend-focused ETFs like DFE. Inflation can erode the real value of dividends, also impacting demand.

Economic Conditions: Overall economic growth, recessions, and other macroeconomic factors influence the performance of the companies held by DFE, indirectly affecting its price.