Interest Rates: As interest rates rise, bond prices typically fall, and vice versa. The US10Y is particularly sensitive to changes in the Federal Reserve's policy rate.

Inflation: Higher inflation erodes the real value of future bond payments, leading to lower bond prices. Inflation expectations are closely watched.

Economic Growth: Stronger economic growth can lead to higher interest rates and potentially higher inflation, putting downward pressure on bond prices. Weaker growth may boost bond prices.

Federal Reserve Policy: The Fed's monetary policy decisions, including quantitative easing or tightening, significantly influence bond yields and prices.

Global Events: Geopolitical instability or economic crises can create a "flight to safety," increasing demand for US Treasury bonds and pushing prices up.

Supply and Demand: The balance between the supply of newly issued US Treasury bonds and investor demand can affect prices. Increased supply can lower prices.