Interest Rates: Rising interest rates generally decrease bond prices, including those held by SSTHX. Conversely, falling rates tend to increase bond prices.

Credit Risk: Changes in the creditworthiness of the issuers of bonds held by the fund can affect its price. Downgrades increase risk, lowering prices; upgrades decrease risk, raising prices.

Inflation Expectations: Higher inflation expectations often lead to higher interest rates and lower bond prices, affecting SSTHX's value. Lower expectations can have the opposite effect.

Market Liquidity: The ease with which fund shares can be bought or sold affects its price. Lower liquidity can lead to wider bid-ask spreads and potentially lower prices.

Fund Management: The fund manager's investment decisions and strategy implementation influence the fund's performance and, consequently, its price.

Economic Growth: Stronger economic growth can lead to higher interest rates and inflation expectations, potentially lowering bond prices. Weaker growth may have the opposite effect.