Yield Spike

Yield spike means a sudden and sharp increase in bond yields. In simple terms, a yield spike happens when borrowing costs jump quickly. A yield spike is important because it can pressure stocks, raise mortgage rates, and signal changing expectations about inflation, interest rates, or government debt. Investors often react strongly when yields move higher too quickly. For example, if the 10-year Treasury yield jumps after a hot inflation report, that move can be called a yield spike. A yield spike is not always caused by one factor. It can come from inflation fears, stronger economic data, central bank signals, or weaker demand for bonds.