Index Performance: ESPX-B.TO tracks the S&P 500, so its price directly reflects the performance of the 500 largest US companies.

Currency Fluctuations: As a CAD-traded ETF holding USD assets, exchange rate changes (CAD/USD) affect its price. A stronger CAD decreases the ETF's CAD price.

Supply and Demand: High demand for ESPX-B.TO relative to supply can increase its price, while high selling pressure can decrease it.

Interest Rates: US interest rate hikes can negatively impact US equity valuations, potentially lowering ESPX-B.TO's price. Canadian rates have indirect effects.

Economic Data: US economic indicators like GDP growth, inflation, and unemployment influence investor sentiment and US equity values, thus affecting ESPX-B.TO.

Market Sentiment: Overall investor optimism or pessimism towards US equities plays a crucial role in ESPX-B.TO's price movements.

ETF Flows: Large inflows into ESPX-B.TO can increase its price, while significant outflows can decrease it.

Geopolitical Events: Major global events (e.g., wars, political instability) impacting the US economy or financial markets can influence ESPX-B.TO's price.