The core idea
Banks hold bonds, use them as collateral, price loans from market rates and fund themselves through debt markets.
What is happening underneath
Large yield changes affect securities valuations, deposit competition and the economics of maturity transformation.
How investors should read it
Bond-market stress can therefore move quickly onto bank balance sheets.
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.