Interest Rates: Rising interest rates typically decrease the value of existing mortgages, lowering the net asset value and price of MORT.US.

Mortgage-Backed Security (MBS) Supply: Increased MBS supply can dilute the market, potentially decreasing demand and prices of ETFs like MORT.US.

Prepayment Rates: Higher prepayment rates accelerate the return of principal, shortening the duration of MBS and influencing MORT.US pricing.

Credit Risk: Perceived or actual changes in borrower creditworthiness impact MBS values, which directly affect MORT.US prices.

Economic Growth: Stronger economic growth can lead to higher interest rates and increased housing activity, indirectly affecting MORT.US.

Inflation Expectations: Rising inflation expectations usually push interest rates higher, negatively impacting the price of fixed-income assets like MORT.US.

Federal Reserve Policy: The Federal Reserve's monetary policy, including quantitative easing or tightening, significantly influences interest rates and MBS markets, impacting MORT.US.