Ohio Rev. Code Ann. § 3307.043
(B) The chief investment officer shall reasonably supervise the licensed state retirement system investment officers and other persons employed by the state teachers retirement system with a view toward preventing violations of Chapter 1707. of the Revised Code, the "Commodity Exchange Act," 42 Stat. 998, 7 U.S.C. and following, the "Securities Act of 1933," 48 Stat. 74, 15 U.S.C. and following, and the "Securities Exchange Act of 1934," 48 Stat. 881, 15 U.S.C. 78a, and following, and the rules and regulations promulgated under those statutes. This duty of reasonable supervision shall include the adoption, implementation, and enforcement of written policies and procedures reasonably designed to prevent persons employed by the state teachers retirement system from misusing material, nonpublic information in violation of those laws, rules, and regulations. For purposes of this division, no chief investment officer shall be considered to have failed to satisfy the officer's duty of reasonable supervision if the officer has done all of the following:
(C) The chief investment officer shall establish and maintain a policy to monitor and evaluate the effectiveness of securities transactions executed on behalf of the board. No chief investment officer shall be considered to have failed to satisfy the officer's duty under this division if the officer has done both of the following: