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Investors Bank & Trust

From Alfawiki
Adapted from the English Wikipedia article Investors Bank & Trust, available under CC BY-SA 4.0Updated 8 August 2025
Investors Bank & Trust
Company typeSubsidiary
IndustryCustodian bank
PredecessorEaton Vance (division)
Founded1969
FateAcquired by State Street Corporation in 2007 and integrated into its operations
Headquarters
Boston
,
United States
ProductsCustodian banking services
ParentState Street Corporation (post-2007)

Investors Bank & Trust (IBT) operated as a United States-based custodian bank and served as the main subsidiary of Investors Financial Services Corp., a holding company headquartered in Boston. Established in 1969 as a division of Eaton Vance, IBT was purchased by State Street Corporation in 2007 through an all-stock transaction valued at approximately $4.5 billion. Following this acquisition, IBT was delisted and integrated into State Street's operations, which now refer to the former IBT business as "State Street Back Bay."

The company's primary office was situated in Boston's iconic John Hancock Tower, where it held the position of lead tenant. Notable clients included Aegon, Barclays Global Investors, Eaton Vance, and MassMutual.

Office locations

Investors Financial Services operated multiple offices across various locations including Massachusetts, New York City, Sacramento, Toronto, Dublin, and Grand Cayman Island. The New York branch employed roughly 10 staff members, whereas the Grand Cayman site functioned mainly for tax-related purposes.

Holdings

  • Investors Bank & Trust
  • Merrimac Money Market Funds