I am looking to describe the relationship between a bank account (such as a checking account, a loan, etc.) to a bank or other financial institution.
Right now, I am using is conducted by, as in
Account 123 is conducted by My Credit Union.
I have also considered is held at (or is being held at), and is managed by.
But all of these seem awkward. Are there other phrases or words for this relationship that are accurate and more elegant?