Okla. Stat. tit. 58, § 58-581: Investment of funds

A. Pending the settlement of any estate on the petition of the

personal representative or any heir, legatee or devisee of the

decedent, the court may order any money in the hands of the personal

representative to be invested for the benefit of the estate, in

United States Government obligations, in the form of securities of,

or other interests in, any open-end or closed-end management type

investment company or investment trust registered under the

Investment Company Act of 1940; provided, that the portfolio of such

investment company or investment trust is limited to United States

Government obligations and to repurchase agreements fully

collateralized by such United States Government obligations, and

provided further, that any such investment company or investment

trust shall take delivery of such collateral, either directly or

through an authorized custodian. Such order can only be made after

such notice of the petition to the heirs, legatees, devisees, or

personal representative as the court may direct.

B. Pending the settlement of any estate, the personal

representative, unless expressly provided to the contrary in the

will of the decedent, may invest estate funds in United States

government obligations directly and in accounts fully insured by the

United States government, without any order of the court.