Market Interest Rates: Higher interest rates tend to decrease bond prices as newly issued bonds offer more attractive yields, making existing bonds like those in VVJBX less desirable.

Economic Conditions: Economic growth typically leads to higher inflation expectations, prompting investors to sell bonds, thus lowering VVJBX's price. Conversely, economic slowdowns often increase demand for safer assets like bonds, pushing prices up.

Credit Risk Perception: Changes in the perceived creditworthiness of bond issuers held by VVJBX can significantly impact its price. Downgrades in credit ratings usually lead to lower bond prices.

Inflation Expectations: Rising inflation erodes the purchasing power of fixed-income investments, causing investors to sell bonds, which in turn lowers the price of VVJBX.

Supply and Demand: The overall supply of similar bond funds and investor demand directly influence the price. Increased supply or decreased demand can drive the price down.

Maturity and Duration: VVJBX's price sensitivity to interest rate changes is determined by the average maturity and duration of its bond holdings. Longer maturities and higher durations mean greater price volatility.

Fund Management: Decisions by the fund manager to alter the fund's composition, such as selling certain bonds or investing in different sectors, can affect the fund's performance and subsequently its price.

Geopolitical Events: Global events such as political instability or major policy shifts can impact market sentiment and affect bond prices indirectly, influencing VVJBX's value.

Currency Fluctuations: Changes in currency exchange rates can affect the value of international bonds held by VVJBX, influencing its overall price, especially if the fund has exposure to foreign bonds.

Liquidity: Low liquidity in the underlying bond market can affect the ability to trade bonds quickly, potentially impacting the price of VVJBX if there are significant redemption requests.