Underlying Index: XUS-U.TO tracks the S&P 500, so its price closely mirrors the index's movements. Supply and Demand: Higher demand pushes the price up, while increased selling pressure lowers it. Foreign Exchange: As it's a CAD-denominated ETF holding USD assets, CAD/USD fluctuations impact returns. Management Fees: The ETF's expense ratio slightly reduces overall returns compared to the index. Tracking Error: Deviations between the ETF's and the index's performance affect the ETF price. Market Sentiment: Broad investor optimism or pessimism influences buying and selling activity. Economic Data: Key economic releases can affect company earnings, and subsequently, the index. Geopolitical Events: Global events impact market volatility and investor confidence. Interest Rates: Changes in interest rates affect stock valuations and investor behaviour. Dividend Yield: Dividends paid by companies in the index influence the ETF's total return. Competitor ETFs: Price fluctuations of similar ETFs can affect the demand for XUS-U.TO. Liquidity: Higher liquidity generally leads to tighter bid-ask spreads.