Underlying Assets: The IUSS.F ETF's price closely tracks the performance of its underlying assets, which are typically stocks in a specific index. Any fluctuations in these stock prices directly impact the ETF's value.

Supply and Demand: Market demand for IUSS.F shares relative to their supply influences the ETF's price. Higher demand tends to drive the price up, while increased supply can lower it.

Expense Ratio: The ETF's expense ratio, which covers management and operational costs, can slightly affect its overall return and thus its price over time. Higher expenses can subtly detract from performance.

Currency Fluctuations: If the underlying assets are priced in a different currency, exchange rate movements between that currency and the trading currency of IUSS.F can impact its price.

Investor Sentiment: General market sentiment, particularly towards the sectors or regions represented in the ETF, can influence investor interest and consequently the ETF's price.

Index Rebalancing: Changes to the composition of the underlying index, such as the addition or removal of stocks, can cause the ETF to adjust its holdings and potentially affect its price.