Money market funds like DGUXX.US primarily aim to maintain a stable net asset value (NAV) of $1 per share. However, slight fluctuations can occur. Interest Rates: Rising interest rates generally lead to higher yields and potentially increased attractiveness, subtly impacting the NAV. Falling rates can have the opposite effect.

Credit Quality of Holdings: If the underlying securities held by DGUXX.US experience downgrades or defaults, it could negatively affect the NAV.

Fund Expenses: The fund's operating expenses are deducted from its returns, slightly impacting the NAV and yield.

Supply and Demand: Increased demand for DGUXX.US can put upward pressure on its price, although the effect is usually minimal due to its nature.

Market Sentiment: Broad market risk aversion can drive investors towards safer assets like money market funds, slightly affecting demand.

Federal Reserve Policy: Actions by the Federal Reserve, such as adjusting the federal funds rate or engaging in quantitative easing, have a significant impact on money market rates and yields.