Fund Performance: Strong past performance often attracts more investors, increasing demand and potentially driving up the price. Conversely, poor performance can lead to outflows and price decreases.

Interest Rate Environment: Rising interest rates can make bonds less attractive, decreasing their value and thus affecting TIEXX.US's price if it holds bonds. Lowering rates can have the opposite effect.

Credit Risk: If the creditworthiness of the issuers of bonds held by TIEXX.US deteriorates, the fund's price may decline due to increased perceived risk.

Inflation Expectations: Higher inflation expectations typically lead to higher interest rates and decreased bond values, potentially lowering TIEXX.US's price.

Market Sentiment: General optimism or pessimism in the market can influence investor demand for fixed-income funds like TIEXX.US, affecting its price.

Fund Flows: Large inflows of capital into TIEXX.US can push its price higher, while significant outflows can put downward pressure on the price.

Management Fees & Expenses: Higher fees and operating expenses can negatively impact the fund's net asset value (NAV) and potentially lower its price over time.