Underlying Holdings: The price of ZMID-F.TO is primarily driven by the performance of the mid-cap Canadian equities it holds. Fluctuations in these companies' stock values directly impact the ETF's NAV.

Supply and Demand: Market demand for ZMID-F.TO shares affects its price. High demand can push the price above its NAV, while selling pressure can depress it.

Market Sentiment: Overall investor confidence or fear in the Canadian stock market, especially towards mid-cap companies, influences ZMID-F.TO's price.

Economic Conditions: Macroeconomic factors such as interest rates, inflation, and GDP growth in Canada can indirectly affect the profitability and valuation of the underlying companies.

Index Tracking: ZMID-F.TO aims to replicate the performance of its benchmark index. Its price can deviate slightly due to management fees, trading costs, and imperfect replication.

Currency Fluctuations: Although ZMID-F.TO invests in Canadian equities, currency exchange rates could have an impact if the underlying companies have significant international operations.

ETF Management Fees: The expense ratio charged by the ETF provider reduces the overall return and can subtly affect its price over time compared to its benchmark.

Trading Volume: Higher trading volume can lead to tighter bid-ask spreads and more efficient price discovery, potentially influencing short-term price movements.