Market Interest Rates: Higher interest rates can decrease the attractiveness of bond funds like FSFJX.US as investors may seek higher yields elsewhere, causing price declines.

Credit Quality of Holdings: Downgrades in the credit ratings of bonds held by the fund can lower its net asset value, impacting the price of fund shares.

Economic Growth: Strong economic growth can lead to rising interest rates and inflation, which may negatively affect bond prices and, consequently, FSFJX.US's price.

Inflation Expectations: Rising inflation expectations typically push interest rates higher, reducing the value of existing bonds in the fund and decreasing FSFJX.US's price.

Fund Management Expertise: Skilled fund managers may generate better returns within acceptable risk parameters, positively impacting FSFJX.US's price relative to its peers.

Investor Sentiment: Positive investor sentiment towards fixed-income assets can increase demand for bond funds like FSFJX.US, driving up its price, and vice versa.