40 ILCS 5/16-179
To be the trustee of the reserves created under this Article, and to invest and reinvest such reserves, subject to the requirements and restrictions set forth in Sections 1-109, 1-109.1, 1-109.2, 1-110, 1-111, 1-114 and 1-115.
No bank or savings and loan association shall receive investment funds as permitted by this Section, unless it has complied with the requirements established pursuant to Section 6 of "An Act relating to certain investments of public funds by public agencies", approved July 23, 1943, as now or hereafter amended. The limitations set forth in such Section 6 shall be applicable only at the time of investment and shall not require the liquidation of any investment at any time.
The board shall have the authority to enter into such agreements and to execute such documents as it determines to be necessary to complete any investment transaction.
All investments shall be clearly held and accounted for to indicate ownership by the system. The board may direct the registration of securities or the holding in interests in real property in the name of the system or in the name of a nominee created for the express purpose of registration of securities or holding interests in real property by a national or state bank or trust company authorized to conduct a trust business in the State of Illinois. The board may hold title to interests in real property in the name of the system or in the name of a title holding corporation created for the express purpose of holding title to interests in real property.
Investments shall be carried at cost or at a value determined in accordance with generally accepted accounting principles.
40 ILCS 5/16-179