Interest Rates: Changes in prevailing interest rates, particularly those set by the Federal Reserve, significantly influence bond yields and prices, impacting TLSTX.US as a bond fund.

Credit Risk: Perceived creditworthiness of the issuers whose bonds TLSTX.US holds affects its price; downgrades can decrease value.

Inflation Expectations: Anticipated inflation impacts bond yields; higher inflation expectations typically lead to lower bond prices and TLSTX.US value.

Economic Growth: Overall economic conditions influence bond yields; stronger growth often pressures yields upward, potentially decreasing TLSTX.US value.

Market Sentiment: Investor risk appetite and general market sentiment can cause fluctuations in bond prices, affecting TLSTX.US.

Fund Flows: Inflows and outflows of capital into and out of TLSTX.US can affect its trading price based on supply and demand.

Maturity & Duration: The average maturity and duration of the bonds held in TLSTX.US greatly influence price sensitivity to interest rate changes.