Bond Market Run

A rapid, panic-driven selloff of bonds that causes yields to spike and bond prices to collapse as investors rush for liquidity.

A bond market run occurs when a large volume of investors simultaneously attempt to sell their debt securities, usually driven by fears of default, rapid inflation, or aggressive interest rate hikes. Because bond prices move inversely to yields, a mass selloff causes bond prices to plummet and yields to skyrocket. For investors, a run on the bond market is highly disruptive. It increases the cost of borrowing across the entire economy, impacts mortgage rates, and can lead to severe capital losses for fixed-income portfolios. It often signals a broader loss of confidence in a government's fiscal policy or monetary stability. When a run occurs, liquidity can dry up rapidly. Investors looking to exit their positions may be forced to accept steep discounts, while market makers become reluctant to buy. This feedback loop can turn a standard market correction into a systemic crisis if left unchecked by central bank intervention.

Suppose a government's 10-year Treasury bond is trading at par value with a yield of 3.00%. Following an unexpected fiscal policy announcement, investors panic and rush to sell. The massive wave of sell orders drives the market price of the bond down from $100 to $85, causing the yield to spike from 3.00% to 5.25% in a matter of days.