Interest Rates: Rising interest rates generally decrease MMUCX.US's price, while falling rates increase it. This is because new, higher-yielding money market funds become more attractive.

Credit Risk: Deterioration in the creditworthiness of issuers of securities held by MMUCX.US can negatively affect its price due to increased risk of default.

Liquidity: Market liquidity affects the ease with which the fund can sell its holdings. Reduced liquidity can lead to price declines, especially during periods of stress.

Fund Expenses: Higher expense ratios can detract from returns and make the fund less competitive, potentially affecting its price relative to other funds.

Market Sentiment: General investor confidence or fear can influence demand for money market funds, impacting their price, although typically less volatile than stock funds.

Economic Conditions: Overall economic health, including inflation and unemployment, influences interest rate expectations and credit quality, indirectly affecting MMUCX.US.