Neb. Rev. Stat. § 79-968: Retirement system; assets; funds; account; investment.

All assets of the retirement system shall be credited, according to the purpose for which they are held, to the Expense Fund, to the School Retirement Fund, or to the Contingent Account. Any money in the account or funds available for investment shall be invested by the state investment officer pursuant to the Nebraska Capital Expansion Act and the Nebraska State Funds Investment Act.