S.D. Codified Laws § 1-16B-69
The bonds and notes of the authority are hereby made securities in which all public officers and bodies of this state and all municipal subdivisions, all insurance companies and associations and other persons carrying on insurance business, all banks, bankers, trust companies, including savings and loan associations, building and loan associations, investment banking companies, and other persons carrying on an investment banking business, all personal representatives, conservators, trustees, and other fiduciaries, and all other persons who are authorized to invest in bonds or obligations of the state, may properly and legally invest in the bonds and notes of the authority funds including capital in their own control or belonging to them. The bonds and notes are also hereby made securities which may be deposited with and may be received by all public officers and bodies of this state and all municipalities and municipal subdivisions for any purpose for which the deposit of bonds or notes or other obligations of this state is authorized.
SDCL 1-16B-69