Market Interest Rates: Rising interest rates generally decrease bond prices, including those held in JHQDX.US, as newly issued bonds offer higher yields, making older, lower-yielding bonds less attractive.

Credit Quality: Downgrades in the credit ratings of bonds within the fund can negatively impact its net asset value (NAV), leading to a price decline. Conversely, upgrades can boost prices.

Inflation Expectations: Higher inflation erodes the real value of fixed-income securities, potentially causing investors to sell bond funds like JHQDX.US, thereby lowering its price.

Economic Growth: Stronger economic growth can lead to increased demand for riskier assets, prompting investors to move away from safer bonds, which can pressure JHQDX.US's price.

Fund Management: The skill and strategy of the fund managers influence performance. Poor investment decisions or high expense ratios can detract from returns and the fund's overall attractiveness.

Supply and Demand: High demand for JHQDX.US will push its price up, while increased selling pressure will drive it down, reflecting broader market sentiment and investor preferences.