The core idea
Bond yields can rise because markets expect higher policy rates, stronger growth, higher inflation, greater bond supply, a larger term premium, weaker demand or increased credit risk. The dominant cause depends on which maturity and issuer are moving.
What is happening underneath
A rise in a two-year government yield often carries different information from a rise in a thirty-year yield. Short maturities are usually more tightly connected to the expected policy path, while long maturities also reflect inflation uncertainty, term premium and long-run fiscal conditions.
How investors should read it
The useful question is not simply whether yields rose, but which part of the curve moved and why.
The same market move can carry different information depending on which maturity, issuer and risk premium is changing. Read the question together with the underlying concepts rather than treating one price move as a universal signal.