215 ILCS 5/404.1
The Director may maintain with a corporation qualified to administer trusts in this State under the Corporate Fiduciary Act for the securities deposited with the Director, a limited agency, custodial, or depository account, or other type of account for the safekeeping of those securities, and for collecting the income from those securities and providing supportive accounting services relating to such safekeeping and collection. Such a corporation, in safekeeping such securities, shall have all the powers, rights, duties and responsibilities that it has for holding securities in its fiduciary accounts under the Securities in Fiduciary Accounts Act . The Director shall arrange with any depository institution that has been authorized to accept and execute trusts to provide for collateralization of any cash accounts resulting from the failure of any depositing company to give instruction regarding the investment of any such cash amounts as provided for by Section 6 of the Public Funds Investment Act.
215 ILCS 5/404.1