Investors Bank & Trust (IBT) is a custodian bank, owned since 2007 by State Street Bank & Trust (also Boston-based.)
IBT provides securities-processing services for mutual funds, investment advisors, limited partnerships, banks, endowments, foundations, employee benefit plans and insurance companies.
Some of its better-known client-customers include Aegon, Barclays Global Investors, Eaton Vance and MassMutual.
The company has an estimated $1.95 billion in assets under custody.