Market Interest Rates: Rising interest rates generally decrease bond prices, while falling rates increase bond prices. VWASX, being a bond fund, is significantly affected by these fluctuations.

Credit Risk: Changes in the creditworthiness of the bonds held within the fund impact its value. Downgrades can lower the price, upgrades can increase it.

Inflation Expectations: Higher inflation expectations can lead to lower bond prices as investors demand higher yields to compensate for the erosion of purchasing power.

Economic Growth: Strong economic growth can sometimes lead to higher interest rates, negatively impacting bond prices, whereas weaker growth can have the opposite effect.

Fund Flows: Large inflows into the fund can drive up demand and potentially increase the price, while large outflows can exert downward pressure.

Maturity and Duration: Longer-maturity bonds and funds with a higher duration are more sensitive to interest rate changes, leading to greater price volatility.