The core idea
Central banks hold foreign government bonds as part of official reserve portfolios used for liquidity, intervention capacity and confidence in external payments.
What is happening underneath
Reserve managers generally emphasize safety and liquidity as well as return.
How investors should read it
The scale of official holdings can make reserve allocation an important source of demand in major sovereign markets.
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.