Fund Performance: SSEIX's historical performance significantly influences its price. Strong returns attract investors, increasing demand and thus the fund's price.

Market Conditions: Overall market trends, such as bull or bear markets, affect investor sentiment and influence demand for SSEIX. Positive market conditions generally lead to higher prices.

Interest Rates: Interest rate changes can impact bond yields and investor preferences, affecting the attractiveness and price of SSEIX.

Economic Indicators: Economic data releases (GDP growth, inflation, unemployment) affect investor confidence and can drive price fluctuations in SSEIX.

Fund Manager Expertise: The skill and investment strategy of SSEIX's fund manager directly influence fund performance and, consequently, its price.

Expense Ratio: SSEIX's expense ratio, or the annual cost of operating the fund, can affect its overall return and indirectly influence its price relative to other funds.

Investor Demand: High demand for SSEIX drives up its price, while increased selling pressure can lower it. Investor sentiment and market perception are key drivers.

Underlying Assets: Changes in the value of the assets held within the SSEIX portfolio (stocks, bonds, etc.) directly impact the fund's Net Asset Value (NAV) and price.