Interest Rates: Higher rates typically increase MMWAX yields and attractiveness, driving up demand and possibly the price. Lower rates do the opposite.

Credit Quality: The creditworthiness of the securities held in the fund impacts investor confidence. Higher quality generally supports the price.

Economic Conditions: A strong economy often leads to higher interest rates, affecting MMWAX as mentioned above. Uncertainty can increase demand for safe assets.

Fund Management: The fund manager's expertise in selecting securities and managing risk can influence returns and, therefore, the price.

Supply and Demand: Increased demand for MMWAX shares relative to their supply can put upward pressure on the price, and vice versa.

Inflation Expectations: Rising inflation expectations may lead to expectations of higher interest rates, impacting the fund's yield and price.

Regulatory Changes: Changes in regulations affecting money market funds can impact their costs and competitiveness, influencing the price.