one having charge of buildings or grounds or animals; keeper, steward
Bloomberg Financial Glossary
保管人保管人 Either (1) a bank, agent, trust company, or other organization responsible for safeguarding financial assets, or (2) the individual who oversees the mutual fund assets of a minor's custodial account.
Investopedia Financial Terms
Custodian
A financial institution that has the legal responsibility for a customer's securities. This implies management as well as safekeeping.
Also known as "custody".
Investopedia Says:
There are additional fees associated with this special attention.