Underlying Holdings Performance: The price of HEMZX.US is significantly affected by the performance of the underlying mortgage-backed securities (MBS) it holds.

Interest Rate Fluctuations: Changes in interest rates influence the value of MBS and consequently the fund's price. Rising rates typically decrease MBS value.

Prepayment Risk: Unexpectedly high or low prepayment rates on the underlying mortgages affect the cash flow and value of the MBS, influencing the fund's price.

Credit Risk: Perceived or actual changes in the creditworthiness of borrowers underlying the mortgages within the MBS can impact the fund's value.

Market Sentiment: Overall market sentiment and investor demand for fixed-income securities, particularly MBS, can influence the fund's price.

Fund Management Strategy: The fund manager's investment decisions, including security selection and duration management, affect the fund's performance and price.

Expense Ratio and Fees: The fund's expense ratio and any associated fees directly impact investor returns and can influence its relative attractiveness and price.

Economic Conditions: Macroeconomic factors like inflation, unemployment, and GDP growth can indirectly influence mortgage rates, prepayment rates, and overall market sentiment, affecting the fund's price.