Interest Rates: JNSXX's price, like other money market funds, is primarily affected by short-term interest rates. When rates rise, JNSXX's yield increases, potentially making it more attractive and influencing its price upward. Conversely, falling rates can decrease its yield and price.

Credit Risk: Although JNSXX invests in high-quality, short-term debt, slight variations in the perceived creditworthiness of its holdings can impact its price. Deterioration in the credit quality of underlying securities can negatively affect its net asset value.

Supply and Demand: The overall supply and demand for money market funds can also exert pressure on JNSXX's price. Increased demand due to factors like economic uncertainty can drive prices up, while decreased demand can lower them.

Fund Management: The fund manager's investment decisions, including security selection and maturity management, influence JNSXX's performance and price. Skillful management can lead to higher returns and a more stable net asset value.