Other important industries are financial services, especially mutual funds and insurance. Boston-based Fidelity Investments helped popularize the mutual fund in the 1980s and has made Boston one of the top financial cities in the United States. The city is home to the headquarters of Santander Bank, and Boston is a center for venture capital firms. State Street Corporation, which specializes in asset management and custody services, is based in the city. Boston is a printing and publishing center — Houghton Mifflin Harcourt is headquartered within the city, along with Bedford-St. Martin's Press and Beacon Press. Pearson PLC publishing units also employ several hundred people in Boston. The city is home to three major convention centers—the Hynes Convention Center in the Back Bay, and the Seaport World Trade Center and Boston Convention and Exhibition Center on the South Boston waterfront. The General Electric Corporation announced in January 2016 its decision to move the company's global headquarters to the Seaport District in Boston, from Fairfield, Connecticut, citing factors including Boston's preeminence in the realm of higher education.
Is there an answer to this question (If it cannot be answered, say "unanswerable"): What Boston investment firm helped make mutual funds popular in the 1980's?
Fidelity Investments