S.D. Codified Laws § 58-5A-73 (2026)
In addition to investments in common stock, preferred stock, debt obligations, and other securities permitted, a domestic insurer under this chapter may also:
(1) Invest, in common stock, preferred stock, debt obligations, and other securities of one or more subsidiaries, amounts which do not exceed the lesser of ten percent of the insurer's assets or fifty percent of the insurer's surplus as regards policyholders, provided that after investing, the insurer's surplus as regards policyholders will be reasonable in relation to the insurer's outstanding liabilities and adequate to its financial needs. In calculating the amount of the investments, investments in domestic or foreign insurance subsidiaries shall be excluded, and there shall be included:
(2) Invest any amount in common stock, preferred stock, debt obligations, and other securities of one or more subsidiaries engaged or organized to engage exclusively in the ownership and management of assets authorized as investments for the insurer provided that each subsidiary agrees to limit its investments in any asset so that the investments will not cause the amount of the total investment of the insurer to exceed any of the investment limitations specified. For the purpose of this clause, the term, the total investment of the insurer, includes:
Source: SL 1992, ch 341 , § 40.