Underlying Asset Performance: The primary driver is the performance of the stocks included in the WEB311.SA ETF. A rise in the value of these underlying assets will likely increase the ETF's price, and vice-versa.

Supply and Demand: Market forces of supply and demand influence the ETF's price. High demand coupled with limited supply can push prices upward, while excess supply and low demand can cause prices to decline.

Investor Sentiment: General market sentiment towards the Brazilian stock market or specific sectors represented within WEB311.SA affects the demand for the ETF. Positive sentiment leads to increased buying pressure.

Economic Conditions: Macroeconomic factors such as interest rates, inflation, GDP growth, and unemployment in Brazil can significantly impact the stock market and consequently WEB311.SA's price.

Currency Exchange Rates: Fluctuations in the exchange rate between the Brazilian Real (BRL) and other currencies, particularly the US dollar, influence the ETF's price, especially for foreign investors.

Political and Regulatory Events: Major political events, policy changes, and regulatory updates in Brazil can introduce volatility and affect investor confidence, impacting the ETF's price.

Global Market Trends: International market trends and global economic conditions can indirectly affect WEB311.SA, especially if they influence investor risk appetite or commodity prices relevant to Brazilian companies.

ETF Management Fees: The expense ratio charged by the ETF provider can indirectly affect returns. Higher fees reduce the net return for investors, potentially impacting demand and long-term price performance.