C.R.S. § 26-12-117

It is lawful for the state of Colorado, any of its departments, institutions, or agencies, or any political subdivision of the state to purchase anticipation warrants issued pursuant to the provisions of sections 26-12-110 to 26-12-118 if such warrants satisfy the investment requirements established in part 6 of article 75 of title 24 , C.R.S.; except that the state, its departments, institutions, or agencies, or any of its political subdivisions shall not invest more than twenty percent of the total of any specific fund of such entities in such warrants.