The core idea
A bond-market shock can become systemic when price losses interact with leverage, margin calls, collateral, liquidity mismatches and forced selling.
What is happening underneath
The initial cause may be a rate move, but the amplification often occurs through market plumbing and balance sheets.
How investors should read it
Understanding who holds the risk and how positions are financed is therefore essential.
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.