[Market Interest Rates]: Rising rates can decrease bond values, impacting WBRUOX.US's net asset value. Lower rates can conversely increase bond values.

[Credit Quality of Holdings]: Downgrades or defaults in the fund's bond holdings negatively affect its price. Higher credit quality improves stability.

[Inflation Expectations]: Higher inflation erodes bond returns, decreasing WBRUOX.US's value. Lower inflation expectations have the opposite effect.

[Economic Growth]: A strong economy can lead to higher interest rates, affecting bond prices. Slower growth may lead to lower rates and potentially higher bond prices.

[Fund Management Strategy]: The skill and experience of the fund managers in selecting and managing bond portfolios directly impacts performance and price.

[Supply and Demand]: Investor demand for WBRUOX.US can impact its trading price, especially during periods of high or low market sentiment.

[Fund Expenses]: Higher expense ratios can detract from overall returns, potentially affecting the fund's attractiveness and market price.