Okla. Stat. tit. 60, § 60-175.61: Prudent investor rule

Prudent Investor Rule.

A. Except as otherwise provided in subsection B of this

section, a trustee who invests and manages trust assets owes a duty

to the beneficiaries of the trust to comply with the prudent

investor rule set forth in the Oklahoma Uniform Prudent Investor

Act.

B. The prudent investor rule, a default rule, may be expanded,

restricted, eliminated, or otherwise altered by the provisions of a

trust. A trustee is not liable to a beneficiary to the extent that

the trustee acted in reasonable reliance on the provisions of the

trust.