Interest Rates: Rising interest rates typically decrease bond values, lowering MMACX.US's NAV. Conversely, falling rates usually increase bond values and the fund's NAV.

Credit Risk: Downgrades to the credit ratings of bonds held by MMACX.US can negatively impact its price. Higher perceived credit risk often leads to lower bond prices.

Inflation Expectations: Higher inflation expectations often lead to higher interest rates, which can decrease bond values and the MMACX.US NAV. Inflation erodes the purchasing power of fixed income payments.

Economic Growth: Strong economic growth can lead to higher interest rates as demand for credit increases, negatively affecting bond prices and the fund's NAV.

Market Sentiment: General investor risk appetite can influence bond prices. During risk-off periods, investors may flock to safer assets, increasing demand for bonds and potentially raising the fund's NAV.

Fund Management: The skill of the fund manager in selecting and managing the bond portfolio impacts performance. Poor security selection or ineffective risk management can negatively affect the fund's price.

Supply and Demand: Changes in investor demand for MMACX.US shares can influence its price. Increased demand can drive prices up, while increased selling pressure can lower prices.