Interest Rates: When interest rates rise, the price of ZCB.F, a zero-coupon bond ETF, typically falls. This is because newly issued bonds become more attractive, making older bonds less valuable.

Inflation Expectations: Higher inflation expectations tend to push bond yields up and bond prices, including ZCB.F's, down. Investors demand higher returns to compensate for the eroding purchasing power of future payments.

Economic Growth: Strong economic growth can lead to higher interest rates and inflation expectations, both of which negatively impact ZCB.F prices. Conversely, a weak economy can boost bond prices.

Credit Rating: Although ZCB.F primarily holds government bonds, any perceived changes in the creditworthiness of the underlying bonds can affect its price. A downgrade could lead to a price decrease.

Market Sentiment: Overall investor sentiment and risk appetite can influence demand for bonds. A "risk-off" environment might increase demand for safer assets like ZCB.F, pushing its price up, while a "risk-on" environment could have the opposite effect.