#mutual_fund__open-end_fund__open-end_investment_company  a regulated investment company that regularly sells and redeems its shares
  supertype:  investment_company__investment_trust__investment_firm__fund  a financial institution that sells shares to individuals and invests in securities issued by other companies
  subtype:  index_fund__indexfund  a mutual fund that invests in the stocks that are the basis of a well-known stock or bond index

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