For Investors Bank headquartered in New Jersey see Investors Bank.Investors Bank & Trust or IBT was a custodian bank and the principal operating subsidiary of Investors Financial Services Corp. (previously NASDAQ: IFIN) a holding company based in Boston Massachusetts. First founded in 1969 as an offshoot of Eaton Vance the company was purchased by State Street Corporation in 2007 as an all-stock deal valued at nearly $4.5 billion and no longer operates as a separate listed company. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Company