Underlying Bond Prices: PFSS.TO's price is heavily influenced by the market value of the underlying Canadian government bonds it holds. These bond prices fluctuate with interest rate changes and overall economic conditions. Interest Rate Movements: As interest rates rise, existing bond prices generally fall, impacting PFSS.TO negatively. Conversely, falling interest rates can boost PFSS.TO's price. Credit Risk Perception: Although holding primarily Canadian government bonds, shifts in market perception of Canadian sovereign debt creditworthiness can affect bond values and therefore PFSS.TO's price. Supply and Demand: General market demand for fixed-income ETFs and PFSS.TO specifically affects its price through buying and selling pressures. Inflation Expectations: Higher inflation erodes the real value of fixed-income assets, potentially decreasing PFSS.TO's price as investors demand higher yields. ETF Management Fees: While relatively small, PFSS.TO's management expense ratio (MER) detracts from overall returns, indirectly impacting its price over time.