S.D. Codified Laws § 58-15-63 (2026)
If an annuity or pure endowment contract, other than reversionary, survivorship, or group annuity, is participating, there shall be a provision that the insurer shall annually ascertain and apportion any divisible surplus accruing on the contract.
Source: SL 1966, ch 111 , ch 23, § 23.