Interest Rates: Changes in prevailing interest rates, especially those set by the Federal Reserve, directly impact the yield and therefore the price of money market funds like MMWEX. Higher rates generally lead to higher yields and potentially higher prices.

Credit Risk: The creditworthiness of the issuers of the securities held within the fund influences the price. Downgrades or defaults can decrease the fund's value.

Maturity of Holdings: The average maturity of the fund's portfolio affects its sensitivity to interest rate changes. Longer maturities typically mean greater price volatility.

Fund Expenses: Operating expenses, like management fees, impact the fund's net yield and, indirectly, its price. Higher expenses may reduce returns.

Market Conditions: General economic conditions and investor sentiment can influence demand for money market funds, thereby affecting their prices.

Supply and Demand: The balance between investors buying and selling MMWEX shares influences its price. Higher demand tends to push prices up.

Inflation Expectations: Expectations of future inflation can impact interest rates and therefore, the price of MMWEX. Higher inflation expectations often lead to higher interest rates.

Regulatory Changes: Changes in regulations governing money market funds can affect their operations, risk profiles, and attractiveness, impacting their prices.