Company Performance: NBND.US's revenue, profitability, and growth prospects influence investor sentiment. Strong earnings reports often drive the stock price upward, while losses can cause declines.

Interest Rate Changes: As a bond ETF, NBND.US's price is sensitive to changes in interest rates. Rising interest rates typically lead to lower bond prices, decreasing the value of the ETF.

Inflation Expectations: Expectations of higher inflation can erode the value of fixed-income securities. An increase in inflation expectations may pressure NBND.US's price downwards.

Credit Quality: NBND.US holds bonds with varying credit ratings. Downgrades in the credit ratings of the underlying bonds can negatively impact the ETF's value.

Market Sentiment: General investor optimism or pessimism can impact the demand for bond ETFs like NBND.US. Risk aversion tends to increase demand for bonds as a safe haven.

Economic Data: Key economic indicators such as GDP growth, employment figures, and inflation data can influence investor expectations and bond yields, ultimately affecting NBND.US.

Federal Reserve Policy: The Federal Reserve's monetary policy decisions, including interest rate adjustments and quantitative easing, directly impact bond yields and NBND.US's price.

Supply and Demand: The basic economic principle of supply and demand affects NBND.US. Higher demand coupled with limited supply will typically increase its price and vice-versa.