Market Interest Rates: Rising interest rates generally decrease bond values, potentially lowering FSMPX's price.

Credit Quality of Holdings: Downgrades in the credit ratings of bonds held by FSMPX can lead to price declines.

Inflation Expectations: Higher inflation expectations usually push bond yields up, causing bond prices to fall, affecting FSMPX negatively.

Economic Growth: Strong economic growth can reduce demand for safer assets like bonds, leading to lower prices for FSMPX.

Fund Management Decisions: Portfolio adjustments made by the fund managers, such as changes in duration or asset allocation, impact FSMPX's performance.

Investor Sentiment: Negative sentiment towards fixed income investments can lead to outflows from FSMPX, potentially lowering its price.

Liquidity of Bond Market: Decreased liquidity in the bond market can make it harder to sell bonds, potentially affecting FSMPX's price.

Geopolitical Events: Unexpected geopolitical events can create uncertainty and impact the overall bond market, leading to fluctuations in FSMPX's price.

Supply and Demand: Changes in the supply and demand for bonds directly influence bond prices and, subsequently, the price of FSMPX.