Underlying Bond Prices: ZQB.TO tracks a portfolio of Canadian investment-grade bonds. Changes in the prices of these bonds directly affect the ETF's net asset value (NAV) and market price.

Interest Rate Movements: As interest rates rise, bond prices generally fall, and vice versa. Given ZQB.TO's fixed-income nature, it is sensitive to interest rate fluctuations.

Credit Spreads: Widening credit spreads, indicating increased risk aversion, can lead to lower bond prices, impacting ZQB.TO negatively. Narrowing spreads have the opposite effect.

Supply and Demand: General market sentiment and investor demand for fixed-income assets influence the ETF's price. Higher demand pushes the price up, while increased selling pressure lowers it.

Liquidity of Underlying Bonds: The ease with which the bonds held by ZQB.TO can be bought or sold affects the ETF's price. Lower liquidity can lead to wider bid-ask spreads and potential price discrepancies.

Inflation Expectations: Rising inflation expectations can lead to higher interest rates, negatively impacting bond prices and, consequently, ZQB.TO's value.

Economic Growth: Strong economic growth may lead to expectations of higher interest rates, which can negatively affect bond prices. Slowing growth might have the opposite effect.

Geopolitical Events: Major global events can impact investor sentiment and risk aversion, affecting bond yields and, indirectly, ZQB.TO's price.

ETF Management Fees: Although not a direct short-term driver, the expense ratio charged by the ETF provider affects the overall return to investors and can influence its relative attractiveness.

Currency Fluctuations: While ZQB.TO holds Canadian bonds, significant fluctuations in the Canadian dollar relative to other currencies could indirectly impact investor demand.