Interest Rates: Changes in interest rates, especially those set by the Federal Reserve, significantly impact bond yields and prices. Rising rates typically cause bond prices to fall.

Credit Risk: The perceived creditworthiness of the issuers of the bonds held by the fund. Downgrades can lower the fund's price.

Inflation: Inflation erodes the purchasing power of fixed income payments, leading to lower bond prices to compensate for the reduced real return.

Market Sentiment: General investor attitudes toward risk and fixed income investments influence demand and, consequently, prices.

Economic Growth: A stronger economy can lead to higher interest rates, which, as noted, often negatively affects bond values.

Fund Management: The skill and strategy of the fund's managers in selecting and managing the bond portfolio can influence performance and price.

Supply and Demand: General supply of bonds and investor demand play a role. Greater demand for fixed income pushes prices upward.