Market Interest Rates: Rising rates generally decrease bond prices as newer bonds offer higher yields, making older, lower-yielding bonds less attractive.

Credit Risk: Downgrades or increased concerns about the issuer's ability to repay debts lowers bond prices.

Inflation Expectations: Higher inflation erodes the value of future fixed income payments, pushing bond prices down to compensate for loss of purchasing power.

Economic Growth: Strong economic growth often leads to higher interest rates, negatively impacting bond prices.

Fund Management Strategy: Decisions regarding duration, credit quality, and sector allocation can impact VOLSX.US's performance relative to its benchmark.

Supply and Demand: Greater demand increases bond prices, while an oversupply can lower prices.

Liquidity: Bonds with high liquidity are often more easily sold at a fair price, affecting the fund's value.

Geopolitical Events: Political instability or international crises can create uncertainty, driving investors towards or away from bonds.